head to head · open source
Mem0 vs Memos
Mem0 has 68,288 GitHub stars, 8,104 forks, 742 open issues and last shipped 4 days ago. Memos has 64,235 stars, 4,935 forks, 67 open issues and last shipped yesterday. Mem0 leads on adoption by 6% (68,288 vs 64,235 stars). Mem0 is written in Python under Apache-2.0; Memos is written in Go under MIT. Mem0 has attracted 12% as many forks as stars, Memos 8%. Memos was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Mem0 | Memos | |
|---|---|---|
| GitHub stars | ★ 68K | ★ 64K |
| License | Apache-2.0 | MIT |
| Written in | Python | Go |
| Last push | 2026-10-30 | 2026-11-02 |
| Forks | ⑂ 8.1K | ⑂ 4.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mem0 if
- You weight community size — 68K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Memos if
- You want the Memos feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and Memos fits your workflow better
About Mem0
Learn more · Join Discord · Demo 📄 Benchmarking Mem0's token efficient memory algorithm → New Memory Algorithm (April 2026) All benchmarks run on the same production representative model stack. Single pass retrieval (one call, no agentic loops) at a top 200 retrieval budget. Scores reflect Mem0's managed platform, which includes proprietary optimizations not available in the open source SDK; open source users should expect directionally similar gains but not identical numbers. What changed: Single pass ADD only extraction one LLM call, no UPDATE/DELETE. Memories accumulate; nothing is overwritten. Agent…
About Memos
✨ Featured sponsor: CodeRabbit — Industry leading AI code reviews. Memos Fast enough for every thought. Private enough for all of them. Memos is an open source, self hosted home for short form thinking. Daily notes, links, work logs, and snippets flow into a chronological Markdown timeline—on infrastructure you control, without the overhead of an all in one workspace. Run with Docker · Try the live demo · Read the docs Why Memos? Capture quickly — Write in Markdown, attach media, and save without choosing a title, folder, or template. Organize lightly — Revisit notes through the timeline, search, tags, and pins…
read the full Memos overview →
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Frequently asked questions
Is Mem0 or Memos more popular?
Mem0 has 68,288 GitHub stars and Memos has 64,235. Mem0 has the larger community by that measure.
Are Mem0 and Memos free?
Both are open source. Mem0 is licensed under Apache-2.0 and Memos under MIT. Neither carries a licence fee.
What is the difference between Mem0 and Memos?
Mem0 is written in Python and Memos in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Mem0 or Memos?
Choose Mem0 if you want the larger community (68,288 stars) or its Apache-2.0 licence terms. Choose Memos if its feature set, stack or MIT licence fits better. Both are self-hostable.