head to head · open source
Coder vs plannotator
Coder has 17,256 GitHub stars, 1,642 forks, 996 open issues and last shipped yesterday. plannotator has 9,825 stars, 735 forks, 155 open issues and last shipped yesterday. Coder leads on adoption by 76% (17,256 vs 9,825 stars). Coder is written in Go under AGPL-3.0; plannotator is written in TypeScript under Apache-2.0. Coder has attracted 10% as many forks as stars, plannotator 7%. Coder was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (agents), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| Coder | plannotator | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 9.8K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Go | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 1.6K | ⑂ 735 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Coder if
- You weight community size — 17K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick plannotator if
- You want the plannotator feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and plannotator fits your workflow better
About Coder
Self Hosted Cloud Development Environments and AI Agents Quickstart Docs Why Coder Premium Coder is a self hosted platform for cloud development environments and AI coding agents. Workspaces are defined with Terraform, connected through a secure Wireguard® tunnel, and automatically shut down when not used. Coder Agents runs a native AI coding agent whose loop executes in the control plane on your infrastructure, with no API keys in workspaces. Define cloud development environments in Terraform EC2 VMs, Kubernetes Pods, Docker Containers, etc. Automatically shutdown idle resources to save on costs Onboard…
read the full Coder overview →
About plannotator
Everything you need to annotate and stay in the loop with your agents Markdown Review • Code Review • HTML Artifacts Annotate plans, specs, markdown, and HTML before implementation. Review diffs and PRs. Send feedback to your agent. Watch the og demo · Installation guide · Official site · Visual HTML Skills · Herdr Annotate Plannotator Plannotator is a local, browser based review surface for AI coding agents: Claude Code, Codex, Copilot CLI, Gemini CLI, OpenCode, Kiro, Droid, Amp, and Pi. It plugs directly into your agent through its hooks and commands. When the agent proposes a plan, html, or finishes writing…
read the full plannotator overview →
More in Developer Tools
Related comparisons
More Version Control & Collaboration projects
Compare either of these against the rest of the Version Control & Collaboration field.
Frequently asked questions
Is Coder or plannotator more popular?
Coder has 17,256 GitHub stars and plannotator has 9,825. Coder has the larger community by that measure.
Are Coder and plannotator free?
Both are open source. Coder is licensed under AGPL-3.0 and plannotator under Apache-2.0. Neither carries a licence fee.
What is the difference between Coder and plannotator?
Coder is written in Go and plannotator in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Coder or plannotator?
Choose Coder if you want the larger community (17,256 stars) or its AGPL-3.0 licence terms. Choose plannotator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.