What it does
SiYuan is a local-first personal knowledge management and note-taking app. Its official site describes Markdown, block references, bidirectional links, databases, end-to-end encrypted sync, and block-level editing. Instead of treating only whole documents as the unit of organization, SiYuan lets users reference and work with smaller pieces of a note, which can help when ideas need to be reused in several contexts.
For an illustrative research notebook, write source notes with one claim or observation per block, then link a later synthesis note back to the relevant blocks. SiYuan's product page explains block references and bidirectional links, and frames content blocks as the core unit for organizing and reusing material. Its database and flashcard features may be useful if the same knowledge also needs to be reviewed or queried.
The homepage describes local-first operation and encrypted multi-device sync, but this research did not install the app or test sync, encryption, or database behavior. SiYuan's feature set is richer than a plain text editor, so readers should check its setup guide and licensing/pricing pages before choosing a hosted or self-managed configuration. The license and current plan restrictions were not examined.
Strengths
- Block references and bidirectional links can connect smaller pieces of notes rather than only entire pages.
- The official feature list includes Markdown, databases, and flashcards alongside note editing.
- The vendor describes local-first use and end-to-end encrypted synchronization.
Best for
- Building a personal knowledge base where notes link at block level
- Collecting research notes that may later become linked summaries or flashcards