Alternatives
6 alternatives to siyuanThese products are placed in Notes, wikis & internal docs alongside siyuan. The order reflects how much of siyuan’s category footprint each one covers. It is not a ranking, and no company can pay to appear here.
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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.
OpenDeepWiki is the open-source version of the DeepWiki project, aiming to provide a powerful knowledge management and collaboration platform. The project is mainly developed using C# and TypeScript, supporting modular d. OpenDeepWiki is open source, written primarily in C#, released under MIT License. Its repository has 3.5K GitHub stars and 438 forks, and was last committed to within the last two weeks. Niched places it in Notes, wikis & internal docs.
The enterprise internal-wiki incumbent.
The mainstream connected workspace reference.
A leading open source team knowledge base.
A major team-knowledge product for smaller companies.
Category placement comes from the classifier and human review, not from a paid submission. A product missing from this page has either not entered the Niched research set or carries no category assignment yet. Absence is never evidence against it. Read the method or submit a missing product.