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SiYuan vs Many Notes: catalog facts
SiYuan	Many Notes
Freemium Most features are free, including for commercial use. The official cloud sync and assets…	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Android, iOS, Self-hosted	Web, Self-hosted
Block-level references and two-way links with custom attributes SQL queries embedded inside notes for building your own views	Notes kept as files in the filesystem Backlinks, tags and templates
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	Some features need an HTTPS reverse proxy Requires running a server
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: AGPL-3.0	License: MIT
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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