GitHub’s Atom text editor has been dead for almost four years now, but the search traffic never really stopped. Thousands of developers still type “atom text editor” into Google every month, either because they inherited an old project with an .atom config folder, found a tutorial that assumes Atom still exists, or just miss the editor’s Electron-based, endlessly hackable feel. If that’s you in September 2026, the good news is there’s a real, actively maintained answer: Pulsar, the community-led continuation of Atom’s codebase. This tutorial walks through exactly how to move from a dead editor to a living one without losing your packages, keybindings, or years of muscle memory.
GitHub archived Atom’s repositories on December 15, 2022, ending eight years of development after Microsoft folded the project into its broader push toward Visual Studio Code. Atom stopped receiving security patches that day. Anyone still running it in 2026 is running software with nearly four years of unpatched Electron and Node.js vulnerabilities baked in. Pulsar picked up where Atom left off: same interface, same package format, same hackable philosophy, but with updated dependencies, a working package registry, and a release cadence that’s shipped dozens of versions since the fork began. This guide covers the full migration path, from backing up your old Atom setup to running Pulsar as a daily driver, plus where it still falls short of VS Code and Zed. For a broader look at the current code editor and developer tooling landscape, see our AI coding tools guide.
A Quick Timeline: How Atom Died and Pulsar Took Over
It helps to understand the actual sequence of events, since a lot of confusion online conflates “Atom is old” with “Atom is dead,” and the two aren’t quite the same claim. GitHub launched Atom in 2014, branding it “a hackable text editor for the 21st century,” and it built a genuinely loyal following among web developers who liked its package-driven, JavaScript-and-CSS-configurable approach. Microsoft acquired GitHub in 2018, and over the following years, internal investment increasingly shifted toward Visual Studio Code, which Microsoft had launched separately and which quickly overtook Atom in both market share and engineering headcount.
On June 8, 2022, GitHub published a blog post announcing Atom’s sunset, citing the need to focus resources on VS Code rather than maintaining two competing editors. The company gave the community roughly six months’ notice. On December 15, 2022, GitHub archived every repository under the Atom organization, cutting off new commits, new releases, and any further security patching. That is the exact moment Atom stopped being a living project and became a frozen snapshot of late-2022 code.
Within days of the archive going live, community members began forking the codebase. Two notable efforts emerged: Pulsar and a separate project called Atom Community. Pulsar is the one that gained the most sustained traction, building an actual package registry, an installer pipeline for all three desktop platforms, and a public release cadence rather than a one-time snapshot fork. Early Pulsar builds in late 2022 and 2023 were rough by most accounts, functional but clearly community-maintained rather than polished. By 2024 and into 2025, the project had stabilized considerably, and the February 2026 release of v1.131.0 with its Electron 30 upgrade represents roughly three and a half years of steady, if unglamorous, maintenance work by volunteers. That’s the gap this tutorial exists to close: for anyone who installed Atom years ago, never revisited the decision, and is only now discovering the project they’re running has been frozen since 2022.
Prerequisites: What You Need Before Migrating
Before touching your existing Atom installation, gather the following. None of this is exotic, but skipping a step is the most common reason migrations go sideways.
- A working internet connection and about 500MB of free disk space for the Pulsar installer and package cache
- Your existing Atom config directory, typically
~/.atomon macOS/Linux or%USERPROFILE%.atomon Windows - Administrator or sudo access to install software on your machine
- Node.js 18 or later installed if you plan to compile any native Atom packages that don’t ship prebuilt binaries for Pulsar
- Git installed (any recent version) since Pulsar’s package manager, ppm, uses Git internally for some package installs
- An operating system among: Windows 10/11, macOS 12 or later, or a modern Linux distribution (Ubuntu 22.04+, Fedora 38+, Arch, or any distro supporting AppImage/Flatpak/deb/rpm)
- 15 to 45 minutes depending on how many Atom packages you’re carrying over
Pulsar’s current stable branch, v1.131.0, shipped in February 2026 and brought a major internal change: an upgrade to Electron 30. That matters for this migration because it’s the release where the largest chunk of Atom-era technical debt got paid down, so starting your migration from anything earlier than 1.131.x means missing real stability and security improvements. Check the Pulsar releases page before you install to confirm you’re grabbing the latest build, since the project ships on both a “Regular” channel (stable, slower cadence) and a “Rolling” channel (newer features, faster cadence, occasionally rougher edges).
Step 1: Understand Why You Can’t Stay on Atom
This step is easy to skip, but it matters for anyone managing a team’s tooling, not just a solo developer. GitHub announced Atom’s end-of-life in June 2022 and completed the shutdown on December 15, 2022. Since that date, zero security patches have shipped for Atom itself. The editor runs on Electron, which bundles Chromium and Node.js, and both of those have had multiple critical CVEs disclosed since 2022 that Atom will never receive fixes for. If Atom is still opening files on a machine connected to the internet, that machine is running outdated Chromium and Node.js runtimes with known, public vulnerabilities.
Beyond security, there’s a practical decay problem. Atom’s package registry (atom.io) has been in a read-only or degraded state since the shutdown, so installing new packages or updating existing ones through Atom’s built-in package manager frequently fails outright. Extensions that depend on native Node modules increasingly fail to build against modern system toolchains, since nobody is maintaining prebuilt binaries for current operating system versions. If you’re weighing whether to jump to a different editor family entirely rather than staying in the Atom lineage, our VS Code vs. Cursor remote development guide is a useful point of comparison for what a modern, actively developed editor setup looks like. If you’ve noticed Atom crashing on startup after a macOS or Windows update, that’s this decay in action, not a one-off bug.
Step 2: Back Up Your Existing Atom Configuration
Before installing anything new, preserve your current setup. Atom stores everything in one directory, which makes backup trivial.
# macOS / Linux
cp -r ~/.atom ~/.atom-backup-$(date +%Y%m%d)
# Windows PowerShell
Copy-Item -Recurse "$env:USERPROFILE.atom" "$env:USERPROFILE.atom-backup"This directory contains your config.cson (settings), keymap.cson (custom keybindings), init.js or init.coffee (startup script), snippets.cson (custom snippets), styles.less (UI theme overrides), and the packages folder holding every third-party package you’ve installed. Pulsar reads a nearly identical structure, which is the entire reason this migration is realistic instead of a full rebuild from scratch.
Step 3: Export Your Installed Package List
Rather than manually remembering which packages you use, export the list directly from Atom’s package manager (apm) if it still functions, or read the packages folder directly.
# If apm still works in your Atom install
apm list --installed --bare > atom-packages.txt
# Fallback: list package folder names directly
ls ~/.atom/packages > atom-packages.txtOpen the resulting file and skim it. Some entries will be packages you installed years ago and forgot about, things like old linter integrations for languages you no longer write, or themes you tried once. This is a good moment to trim the list down to what you actually use daily, since a smaller package set means a faster, more stable Pulsar install.
Step 4: Download and Install Pulsar
Pulsar publishes installers for all three major desktop platforms directly from its official site and GitHub releases. Do not install Pulsar from a third-party mirror; stick to the official channels listed below.
- Windows: Download the
.exeinstaller from pulsar-edit.dev and run it. No admin rights required for a per-user install. - macOS: Download the
.dmg, drag Pulsar.app into Applications. On first launch, you may need to right-click and choose “Open” to bypass Gatekeeper since Pulsar is community-signed, not Apple-notarized in every release. - Linux: Available as an AppImage (no install needed, just chmod +x and run), a Flatpak via Flathub, or native
.deb/.rpmpackages depending on distro.
# Linux AppImage example
chmod +x Pulsar-x86_64.AppImage
./Pulsar-x86_64.AppImage
# Arch Linux (AUR)
yay -S pulsar-binLaunch Pulsar once after install and let it finish its first-run setup before importing anything. This creates the fresh ~/.pulsar config directory that mirrors Atom’s ~/.atom structure, which is what makes the next step possible.
Step 5: Migrate Your Configuration Files
With Pulsar installed and its config directory created, copy over your personal settings files. Do this selectively rather than dumping the entire Atom folder on top of Pulsar’s, since you want to keep Pulsar’s own default package versions rather than overwrite them with stale Atom-era copies.
# macOS / Linux - copy only your personal config files
cp ~/.atom/config.cson ~/.pulsar/config.cson
cp ~/.atom/keymap.cson ~/.pulsar/keymap.cson
cp ~/.atom/snippets.cson ~/.pulsar/snippets.cson
cp ~/.atom/styles.less ~/.pulsar/styles.less
cp ~/.atom/init.js ~/.pulsar/init.js 2>/dev/null || trueOn Windows, run the equivalent copies from %USERPROFILE%.atom to %USERPROFILE%.pulsar using File Explorer or PowerShell’s Copy-Item. Restart Pulsar after copying so it picks up the new keymap and settings. Your editor should now look and behave almost identically to your old Atom setup, minus the actual packages, which come next.
Step 6: Reinstall Your Packages Through Pulsar’s Package Manager
Pulsar ships with its own package manager, ppm, plus a graphical Settings view for browsing and installing packages, both pointed at Pulsar’s own package registry rather than the defunct atom.io one. Using the exported list from Step 3, install packages one by one or in a batch script.
# Install packages one at a time from your exported list
while read pkg; do
ppm install "$pkg"
done < atom-packages.txt
# Or install a single package by name
ppm install language-dockerMost popular Atom packages install cleanly, since Pulsar’s registry mirrors the bulk of the old Atom package ecosystem and the package manifest format hasn’t changed. Some packages with native Node module dependencies, PlatformIO’s embedded-systems integration being a commonly cited example, can throw build errors on install because their native bindings were compiled against an older Node/Electron ABI. When that happens, check the package’s GitHub issues for a Pulsar-specific fork or patch before giving up on it.
Step 7: Verify Syntax Highlighting and Language Support
Open a handful of representative files from your actual projects, not just a blank test file, and confirm syntax highlighting, auto-indent, and bracket matching all work as expected. Atom’s language packages (language-python, language-javascript, and so on) generally port over without issue since they’re mostly TextMate-style grammar files with no native code involved. If a specific grammar looks broken, reinstall just that package explicitly rather than assuming your whole setup is broken.
# Reinstall a single language package cleanly
ppm uninstall language-python
ppm install language-pythonStep 8: Reconnect Git Integration
One of Atom’s signature features was its built-in Git and GitHub panel, and Pulsar retains the same integrated Git support since it’s part of the core editor rather than a separate package. Open a Git-tracked project folder in Pulsar and confirm the Git tab in the right-hand dock shows your changes, branches, and diff view correctly. If you used GitHub-specific features like inline pull request review in Atom, note that Pulsar’s Git panel handles local Git operations (stage, commit, diff, branch) well, but deep GitHub.com API integration is thinner than Atom’s original GitHub package since that integration was maintained by GitHub itself and wasn’t fully carried into the community fork.
Step 9: Set Up Linters and Formatters
If your Atom workflow relied on linter-eslint, linter-ui-default, or similar packages, reinstall the same chain in Pulsar and verify it actually triggers on save. This is a common failure point because linter packages often depend on a project’s local node_modules and a correctly resolved Node path, which can get scrambled during an OS or Node version update that happened while you were still limping along on Atom.
ppm install linter
ppm install linter-ui-default
ppm install linter-eslint
ppm install intentions
ppm install busy-signalThose last two packages, intentions and busy-signal, are dependencies that most linter packages expect to already be present. If linting silently does nothing after installing linter-eslint, check that both of these are installed and enabled before debugging further.
Step 10: Choose Regular vs. Rolling Release Channel
Pulsar offers two update channels, and picking the right one affects how often you’ll see new features versus how often something might break. The Regular channel ships less frequently and prioritizes stability, which is the better default for anyone using Pulsar for daily production work. The Rolling channel gets new features and Electron upgrades earlier, at the cost of occasionally shipping a change that hasn’t been fully shaken out yet. You can switch channels from Pulsar’s Settings view under the Updates section, or by downloading the alternate installer from the releases page directly.
Step 11: Clean Up and Retire Your Old Atom Install
Once you’ve confirmed Pulsar handles your daily workflow, uninstall Atom entirely rather than leaving it dormant on disk. A dormant, unpatched Electron app is still an attack surface, especially if it’s set as the default handler for any file types on your system. Uninstall it through your OS’s normal application removal process, then optionally delete the original ~/.atom folder once you’ve confirmed your backup copy from Step 2 is intact somewhere safe.
Step 12: Tune Pulsar for Performance
A fresh Pulsar install with three years of accumulated Atom packages reinstalled on top can feel sluggish if you don’t prune it. A few settings worth checking:
- Disable any theme or package you installed once and forgot about; check Settings > Packages and sort by “recently updated” to spot abandoned ones
- Turn off the Tree View’s “Auto reveal on file open” if you work in large monorepos, since it can cause noticeable lag on every file switch
- Confirm you’re running at least v1.131.0 to get the Electron 30 upgrade, since that single change delivers most of the startup-time improvement over Atom
- Disable unused language grammars for languages you don’t actually write, since each loaded grammar adds a small but real memory footprint
Pulsar vs. VS Code vs. Zed: Which Should You Actually Use in 2026?
Migrating to Pulsar makes sense for former Atom users who valued its specific hackability and don’t want to relearn an entirely different extension model. But it’s worth being honest about where Pulsar sits relative to the two editors most developers default to today. VS Code, maintained by Microsoft, has the largest extension marketplace in the industry and effectively unlimited engineering resources behind it. Zed, built by former Atom creators, is a from-scratch native app (not Electron) built for raw performance and real-time collaboration. Pulsar’s advantage is different: it’s the only option of the three that runs your actual existing Atom packages without any porting work, and it’s the only one with zero corporate telemetry baked in by design, since there’s no company monetizing the data.
| Factor | Pulsar | VS Code | Zed |
|---|---|---|---|
| Maintainer | Community (volunteer) | Microsoft | Zed Industries |
| Architecture | Electron (upgraded to Electron 30 in v1.131.0) | Electron | Native (Rust, GPU-accelerated) |
| Atom package compatibility | Native, direct install | None (different extension API) | None (different extension API) |
| Extension/package ecosystem size | Smaller, Atom-era catalog | Largest in the industry | Growing, smaller than VS Code |
| Telemetry by default | None | Opt-out telemetry enabled | Opt-out telemetry enabled |
| Cost | Free, open source (MIT) | Free, some paid AI add-ons | Free, paid AI/collab tiers |
| Best for | Former Atom users, hackers wanting full package-level customization | Broadest general-purpose use, largest plugin selection | Performance-sensitive workflows, real-time pair programming |
The honest recommendation: if you were a happy Atom user mainly because of specific packages you built your workflow around, migrate to Pulsar first and see if it covers your needs before jumping ship elsewhere. If you were on Atom purely out of inertia and never used its deeper customization features, this is also a reasonable moment to evaluate VS Code or Zed fresh, since neither requires nearly as much migration overhead for a simple, general-purpose setup. For a detailed walkthrough of that alternate path, see our guide on migrating from VS Code to Cursor, which covers a similar config-and-extension transfer process.
Package Compatibility: What Transfers Cleanly and What Doesn’t
Not every category of Atom package behaves the same way during migration. Here’s a breakdown by category based on how these packages are structured internally.
| Package type | Migration difficulty | Notes |
|---|---|---|
| Language grammars (syntax highlighting) | Easy | Pure TextMate-style grammar files, no native code |
| Themes (UI and syntax) | Easy | CSS/LESS-based, install and apply directly |
| Snippets | Easy | CSON/JSON format unchanged |
| Linter integrations | Moderate | Usually work, but depend on correctly resolved local Node paths |
| Git/GitHub deep integrations | Moderate | Core Git works; GitHub.com API features thinner than original |
| Packages with native Node modules (hardware/embedded tools) | Hard | May need a Pulsar-specific fork or manual rebuild against current ABI |
| Packages abandoned before 2022 with no updates since | Hard | Often broken regardless of editor; consider a modern replacement package instead |
Common Pitfalls When Migrating from Atom to Pulsar
These are the mistakes that come up most often during this specific migration, in rough order of how often they trip people up.
- Copying the entire ~/.atom folder over ~/.pulsar instead of selective files. This overwrites Pulsar’s own default package versions with stale Atom-era copies and can break core functionality. Copy only your personal config, keymap, snippets, and styles files.
- Installing packages from atom.io links instead of Pulsar’s registry. Old bookmarks and tutorials point at the defunct atom.io package pages. Always install through Pulsar’s own Settings view or ppm, which points at Pulsar’s maintained registry.
- Not updating Node.js before reinstalling packages with native dependencies. An outdated local Node install causes silent build failures for any package that needs to compile native bindings.
- Assuming GitHub panel features work identically. Local Git operations transfer fine; deep GitHub.com API integrations (like inline PR review) are noticeably thinner in Pulsar than they were in Atom’s original GitHub package.
- Skipping the backup step because “it’s just a config folder.” If a package install goes wrong mid-migration, you want your original Atom config intact to fall back on rather than reconstructing keybindings from memory.
- Installing every single old package instead of auditing first. Reinstalling three years of accumulated, half-forgotten packages recreates the bloat and instability that made the old Atom install slow in the first place.
- Not checking which release channel you’re on. Users troubleshooting a bug from an old Rolling build sometimes think Pulsar itself is broken, when switching to the Regular channel resolves it.
- Forgetting to uninstall the old, unpatched Atom binary. Leaving a vulnerable, unmaintained Electron app installed defeats part of the point of migrating in the first place.
Expected Output: What a Successful Migration Looks Like
After completing the steps above, opening Pulsar should produce a workspace that’s visually and functionally close to your old Atom setup. Your custom theme applies automatically, your keybindings respond exactly as configured in keymap.cson, and your Tree View shows the same project structure you’re used to navigating. Running ppm list --installed in a terminal should output a package list matching (or intentionally trimmed from) your original atom-packages.txt export.
$ ppm list --installed --bare
language-docker@0.34.0
linter@2.6.0
linter-eslint@8.10.0
linter-ui-default@2.1.1
busy-signal@2.0.2
intentions@1.1.6
git-plus@0.44.1
minimap@4.29.10Opening the Git panel on a tracked repository should show accurate staged/unstaged changes, and the status bar at the bottom should reflect your current branch name without lag. If any of this doesn’t match, the troubleshooting section below covers the most common causes.
Troubleshooting Common Migration Issues
Here are the issues most frequently reported during this specific Atom-to-Pulsar transition, along with fixes.
- Pulsar won’t open on macOS (“app is damaged” or unsigned warning): Right-click the app in Finder and choose Open instead of double-clicking, or run
xattr -cr /Applications/Pulsar.appin Terminal to clear the quarantine flag. - A specific package fails to install with a native module build error: Confirm Node.js 18+ is installed and on your PATH, then retry with
ppm install <package> --verboseto see the actual compiler error, which usually points at a missing build tool like Python or a C++ compiler. - Keybindings from keymap.cson aren’t applying: Check Pulsar’s Settings > Keybindings view for a conflict warning; a newly installed package may be claiming the same shortcut and silently overriding your custom one.
- Syntax highlighting looks wrong for a specific file type: Uninstall and reinstall just that language grammar package rather than assuming a global issue; grammar packages are isolated from each other.
- Pulsar feels slower than Atom used to. This is almost always leftover bloat from reinstalling every old package indiscriminately. Audit and disable unused packages in Settings > Packages.
- Git panel shows no changes on a repo you know has modifications. Confirm the folder was opened as a project root (File > Open Folder) rather than just opening a single file, since Pulsar’s Git integration scopes to the project root.
- ppm command not found in terminal. On some platforms the installer doesn’t automatically add ppm to PATH; locate it inside the Pulsar installation directory and add that path manually, or use the in-app Settings > Install view instead of the CLI.
- Old GitHub package features (inline PR comments, etc.) are missing entirely. This is expected; Pulsar’s fork does not carry the full GitHub.com API integration from Atom’s original github package. Use GitHub’s web interface or a dedicated Git client for that workflow instead.
Advanced Tips for Power Users
Once the basic migration is stable, a few advanced moves get more out of Pulsar specifically.
Script your package installs for reproducibility. Rather than manually running ppm install repeatedly on a new machine, save your final trimmed package list as a shell script so you can rebuild an identical Pulsar setup on a new laptop in minutes.
#!/bin/bash
# pulsar-setup.sh - run this on any new machine
PACKAGES=(
language-docker
linter
linter-eslint
linter-ui-default
busy-signal
intentions
git-plus
minimap
)
for pkg in "${PACKAGES[@]}"; do
ppm install "$pkg"
done
echo "Pulsar package setup complete."Contribute back instead of just consuming. Because Pulsar is entirely community-maintained, packages you depend on can and do go unmaintained again if nobody steps up. If you rely on a specific package that’s showing its age, opening an issue or a small pull request against its GitHub repo directly helps keep it alive for the next migrating Atom user too.
Track the Rolling channel for a test machine. If you maintain more than one machine, consider running the Rolling release on a secondary or non-critical machine to catch upcoming changes before they land in Regular, then report any regressions upstream.
Use init.js for startup automation. Just like Atom, Pulsar executes init.js (or the legacy init.coffee) on startup. This is a good place to automate small repetitive setup tasks, like auto-opening a specific project or applying a runtime theme switch based on time of day.
Complete Working Example: A Minimal Pulsar Dev Environment
To tie everything together, here’s a complete, minimal setup script that takes a fresh Pulsar install and configures it for a typical JavaScript/Node.js development workflow, combining the migration steps above into one reusable reference.
#!/bin/bash
# full-pulsar-dev-setup.sh
set -e
echo "Step 1: Backing up existing Atom config (if present)..."
if [ -d "$HOME/.atom" ]; then
cp -r "$HOME/.atom" "$HOME/.atom-backup-$(date +%Y%m%d)"
echo "Backup created."
fi
echo "Step 2: Installing core packages..."
CORE_PACKAGES=(
language-babel
language-docker
linter
linter-ui-default
linter-eslint
busy-signal
intentions
git-plus
minimap
highlight-selected
atom-beautify
)
for pkg in "${CORE_PACKAGES[@]}"; do
echo "Installing $pkg..."
ppm install "$pkg" || echo "WARNING: $pkg failed to install, check manually"
done
echo "Step 3: Copying personal config files (edit paths as needed)..."
[ -f "$HOME/.atom/config.cson" ] && cp "$HOME/.atom/config.cson" "$HOME/.pulsar/config.cson"
[ -f "$HOME/.atom/keymap.cson" ] && cp "$HOME/.atom/keymap.cson" "$HOME/.pulsar/keymap.cson"
[ -f "$HOME/.atom/snippets.cson" ] && cp "$HOME/.atom/snippets.cson" "$HOME/.pulsar/snippets.cson"
echo "Setup complete. Restart Pulsar to apply all changes."Save this as a shell script, run it once, restart Pulsar, and you have a working, reproducible development environment that mirrors the core of a typical Atom setup, minus the accumulated cruft and unpatched vulnerabilities. Pairing that setup with a modern Python package manager like the one covered in our uv vs. Poetry comparison rounds out a fully current toolchain if your projects lean on Python.
Should Teams Standardize on Pulsar in 2026?
For individual developers migrating a personal setup, Pulsar is a low-friction choice. For engineering teams deciding on a standard editor policy, the calculus is different. Pulsar has no corporate backing, no SLA, and no dedicated support contract available, which matters for organizations that need guaranteed response times on security issues. Its release history shows consistent activity, with the project having shipped more than 30 tagged releases since the fork began and a public roadmap tracked openly on GitHub, but “actively maintained by volunteers” and “backed by a vendor with a support contract” are different risk profiles for a compliance-conscious organization. Teams in regulated industries, or those requiring vendor accountability for security patching SLAs, are generally better served by VS Code, where Microsoft’s engineering and security teams carry that responsibility. Teams optimizing purely for developer preference and package-level customization, with fewer compliance constraints, can reasonably standardize on Pulsar.
The practical middle ground many teams land on: let individual developers choose their editor freely (Pulsar, VS Code, or Zed all speak the same underlying file formats and don’t lock projects into editor-specific configuration), while keeping actual project tooling, linters, formatters, and CI checks, defined at the repository level rather than the editor level. That way the editor choice stays a personal productivity decision instead of a team-wide dependency.
It’s also worth factoring in the AI-assisted coding tooling question, since that’s become a bigger differentiator between editors in 2026 than it was during Atom’s active years. VS Code’s Copilot integration and various third-party AI extensions are deeply built into its marketplace, and Zed has invested heavily in built-in AI assistance and real-time collaboration features designed around pairing with AI agents. Pulsar, being a community project without dedicated funding for AI features, relies on whatever third-party packages the community builds and maintains, which today is a meaningfully smaller set than what VS Code or Zed offer natively. If AI-native tooling and MCP server support are a priority, our comparison of Cursor MCP servers versus VS Code agents covers that landscape in more depth. If AI-assisted coding is central to your workflow, factor that gap into the decision rather than assuming feature parity across all three editors just because they share a common ancestor in Atom’s original design philosophy.
Migrating Shared Configs Across a Team or Multiple Machines
Everything covered so far assumes a single developer migrating a single machine. If you’re rolling this out across a team, or just keeping a work laptop and a personal machine in sync, a few additional habits are worth building in from the start rather than retrofitting later.
The cleanest approach is to version-control your Pulsar configuration the same way you’d version-control dotfiles. Since Pulsar’s config directory holds plain text CSON, JSON, and JavaScript files, it drops into a Git repository without any special tooling. Push your config.cson, keymap.cson, init.js, and a plain-text package list to a private repo, and any new machine can be brought up to date with a clone and a short install script rather than manual copy-pasting.
# One-time setup: turn your Pulsar config into a dotfiles repo
cd ~/.pulsar
git init
git add config.cson keymap.cson init.js snippets.cson styles.less
git commit -m "Initial Pulsar config"
git remote add origin git@github.com:yourname/pulsar-dotfiles.git
git push -u origin main
# On a new machine, after installing Pulsar:
git clone git@github.com:yourname/pulsar-dotfiles.git ~/.pulsar-dotfiles
cp ~/.pulsar-dotfiles/*.cson ~/.pulsar/
cp ~/.pulsar-dotfiles/init.js ~/.pulsar/For teams, resist the temptation to force a single shared keymap or config file onto every developer through a mandated dotfiles repo. Editor preferences are personal, and forcing uniformity here tends to generate quiet resentment without a real productivity payoff. A better pattern: maintain a shared, optional “starter config” repo that documents recommended packages for the team’s stack (for example, the specific linter and formatter packages that match the project’s actual lint rules), and let individual developers opt in rather than mandating it centrally. Keep the things that actually need to be consistent, lint rules, formatter configs, pre-commit hooks, defined at the repository level in files like .eslintrc or .prettierrc rather than inside anyone’s personal editor configuration (our Ruff vs. Black vs. Flake8 comparison is a useful reference if Python linting is part of that setup). That way the editor someone chooses, Pulsar, VS Code, Zed, or anything else, never affects whether their code passes the team’s actual quality gates.
Frequently Asked Questions
Is Atom text editor still available to download in 2026?
Atom’s installers are no longer distributed through official GitHub channels since its repositories were archived on December 15, 2022. Old installers may still exist on mirrors or personal archives, but running Atom today means running software with roughly four years of unpatched security vulnerabilities in its bundled Electron and Node.js runtime.
Is Pulsar exactly the same as Atom?
Pulsar is built directly on Atom’s original codebase and preserves the same interface, configuration file formats, and package system. It is not identical: dependencies have been updated (including an Electron 30 upgrade in the v1.131.0 release), telemetry has been removed entirely, and some deep GitHub.com API integrations from Atom’s original github package are thinner in Pulsar’s version.
Will all my old Atom packages work in Pulsar?
Most will, particularly language grammars, themes, and snippets, which use formats unchanged since Atom’s original release. Packages with native Node module dependencies (common in hardware and embedded-systems tooling) are more likely to need a rebuild or a community-maintained fork to work against Pulsar’s updated runtime.
Who maintains Pulsar, and is it a company?
Pulsar is maintained by a volunteer community through the pulsar-edit organization on GitHub, not by a company. There is no corporate backer, which means no formal support SLA, but it also means no telemetry collection or commercial pressure shaping the roadmap.
Is Pulsar free to use?
Yes. Pulsar is fully open source under the MIT license, distributed at no cost for Windows, macOS, and Linux, with no paid tiers, subscriptions, or feature gating.
Should I switch to VS Code or Zed instead of Pulsar?
If your Atom workflow depended heavily on specific packages and deep customization, Pulsar offers the smoothest migration since it runs those packages natively. If you have no strong attachment to Atom’s specific package ecosystem, VS Code offers the largest extension marketplace and Zed offers the best raw performance as a native (non-Electron) application, and either is a reasonable fresh start.
Does Pulsar support the same keyboard shortcuts as Atom by default?
Yes, Pulsar ships with Atom’s default keymap intact. Custom keybindings you defined in Atom’s keymap.cson transfer directly by copying that file into Pulsar’s config directory, as covered in Step 5 above.
How often does Pulsar release updates?
Pulsar ships on two channels: a Regular channel with a slower, stability-focused cadence, and a Rolling channel that ships newer changes more frequently. The project has published more than 30 tagged releases since the fork’s founding, with the v1.131.0 Electron 30 upgrade landing in February 2026 as one of its most significant recent updates.