MemOS vs SiYuan
Side-by-side comparison of two AI agent tools
M
MemOSopen-source
Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, and cross-task skill reuse, with 35.24% token savings and DeepSeek Harne
S
SiYuanopen-source
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作
Metrics
| MemOS | SiYuan | |
|---|---|---|
| Stars | 11.7k | 46.6k |
| Star velocity /mo | 971.6666666666666 | 3.9k |
| Commits (90d) | 264 | 4.9k |
| Releases (6m) | 10 | 10 |
| Overall score | 0.730926100634913 | 0.9271708503527412 |
FAQ
- Which is more popular, MemOS or SiYuan?
- SiYuan has more GitHub stars (46,580 vs 11,660).
- Which is more actively developed, MemOS or SiYuan?
- SiYuan had more commits in the last 90 days (4,873 vs 264).
- Should I use MemOS or SiYuan?
- Compare their capabilities, limitations and "best for" notes above. Both are open source, so trying each on a small task is the fastest way to decide.