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SiYuan vs Logseq: catalog facts
SiYuan	Logseq
Freemium Most features are free, including for commercial use. The official cloud sync and assets…	Freemium The app is free and open source under the AGPL 3.0. Logseq Sync is a paid service, and…
Windows, macOS, Linux, Android, iOS, Self-hosted	Windows, macOS, Linux, Android, iOS
Block-level references and two-way links with custom attributes SQL queries embedded inside notes for building your own views	Notes are plain Markdown files in a folder you control Block-level linking and embedding, not just page links
Notes live in the app's own store rather than plain files in a folder The interface has a lot of concepts to learn at once	The database version is in beta and the project warns data loss is possible Outliner structure does not suit long-form prose
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: AGPL-3.0	License: AGPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.