Head to head
5 of 12 recorded facts differ. Everything below is source-reported with a capture date. Niched has not published a buyer verdict for this pair, so nothing here declares a winner. A winner only exists inside a defined buyer niche with stated constraints.
Self-organizing AI second brain for Obsidian + Claude Code. Drop any source and Claude reads, links, and files it into one connected knowledge graph of plain Markdown you own. AI note-taking, personal knowledge management (PKM), and an open-source Notion alternative. Based on Karpathy's LLM Wiki pattern.
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A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.
Visit ↗| Fact | claude-obsidian | siyuan |
|---|---|---|
| GitHub stars | 10.2K | 45.5K |
| Forks | 1.2K | 2.9K |
| Open issues | 119 | 137 |
| Primary language | Python | TypeScript |
| License | MIT License | GNU Affero General Public License v3.0 |
Both products are placed in Notes, wikis & internal docs. A category organises the market; it carries no score. See all claude-obsidian alternatives.