head to head · open source
pstack-claude vs concord-mcp
pstack-claude has 2,480 GitHub stars, 226 forks, 1 open issues and last shipped 2 days ago. concord-mcp has 517 stars, 27 forks, 34 open issues and last shipped 2 days ago. pstack-claude leads on adoption by 380% (2,480 vs 517 stars). pstack-claude is written in JavaScript under MIT; concord-mcp is written in TypeScript under MIT. pstack-claude has attracted 9% as many forks as stars, concord-mcp 5%. pstack-claude was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (claude-code, code-review, codex), 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.
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Side by side
| pstack-claude | concord-mcp | |
|---|---|---|
| GitHub stars | ★ 2.5K | ★ 517 |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-15 | 2026-10-15 |
| Forks | ⑂ 226 | ⑂ 27 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick pstack-claude if
- You weight community size — 2.5K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick concord-mcp if
- You want the concord-mcp feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and concord-mcp fits your workflow better
About pstack-claude
pstack claude is an MIT licensed plugin port of Lauren Tan's opinionated Cursor pstack skill stack to Claude Code, Codex, Pi, GitHub Copilot, OpenCode, Gemini CLI, and Prime Agent, for developers who want rigorous, verified agent workflows outside Cursor.
read the full pstack-claude overview →
About concord-mcp
Concord MCP is an open source, local first communication and coordination layer that lets AI coding agents in different harnesses message each other and share work state through a single MCP server, and it is intended for developers and teams running more than one coding agent in the same repository.
read the full concord-mcp overview →
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Frequently asked questions
Is pstack-claude or concord-mcp more popular?
pstack-claude has 2,480 GitHub stars and concord-mcp has 517. pstack-claude has the larger community by that measure.
Are pstack-claude and concord-mcp free?
Both are open source. pstack-claude is licensed under MIT and concord-mcp under MIT. Neither carries a licence fee.
What is the difference between pstack-claude and concord-mcp?
pstack-claude is written in JavaScript and concord-mcp 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, pstack-claude or concord-mcp?
Choose pstack-claude if you want the larger community (2,480 stars) or its MIT licence terms. Choose concord-mcp if its feature set, stack or MIT licence fits better. Both are self-hostable.