head to head · open source
claude-mem vs CL4R1T4S
claude-mem has 94,125 GitHub stars, 8,305 forks, 186 open issues and last shipped yesterday. CL4R1T4S has 49,980 stars, 10,268 forks, 127 open issues and last shipped 8 days ago. claude-mem leads on adoption by 88% (94,125 vs 49,980 stars). claude-mem is written in TypeScript under Apache-2.0; CL4R1T4S is written in various languages under AGPL-3.0. claude-mem has attracted 9% as many forks as stars, CL4R1T4S 21%. claude-mem was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai), 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
| claude-mem | CL4R1T4S | |
|---|---|---|
| GitHub stars | ★ 94K | ★ 50K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | TypeScript | — |
| Last push | 2026-09-17 | 2026-09-10 |
| Forks | ⑂ 8.3K | ⑂ 10K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick claude-mem if
- You weight community size — 94K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick CL4R1T4S if
- You want the CL4R1T4S feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- You evaluated both and CL4R1T4S fits your workflow better
About claude-mem
claude mem is an Apache 2.0 TypeScript memory layer for AI coding agents that captures what an agent did during a session, compresses it with AI, and injects the relevant parts back into future sessions, built for developers running Claude Code, OpenClaw, Codex, Gemini, Hermes, Copilot, OpenCode and similar tools.
read the full claude-mem overview →
About CL4R1T4S
CL4R1T4S is an AGPL 3.0 repository of full extracted system prompts, guidelines and tools from the major AI models and agents — ChatGPT, Claude, Gemini, Grok, Perplexity, Cursor, Lovable, Replit and more — for anyone who wants to know what instructions sit behind the AI systems they use.
read the full CL4R1T4S overview →
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Frequently asked questions
Is claude-mem or CL4R1T4S more popular?
claude-mem has 94,125 GitHub stars and CL4R1T4S has 49,980. claude-mem has the larger community by that measure.
Are claude-mem and CL4R1T4S free?
Both are open source. claude-mem is licensed under Apache-2.0 and CL4R1T4S under AGPL-3.0. Neither carries a licence fee.
What is the difference between claude-mem and CL4R1T4S?
claude-mem is written in TypeScript and CL4R1T4S in various languages. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, claude-mem or CL4R1T4S?
Choose claude-mem if you want the larger community (94,125 stars) or its Apache-2.0 licence terms. Choose CL4R1T4S if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.