SiYuan
Connect block-based notes and references into a private local knowledge workspace.
What’s included for free?
The $0 lifetime edition includes basic functions and local storage. Official cloud sync/backup is paid. S3 and WebDAV sync integrations require paid PRO features and separately supplied storage.
Where it runs: Local install
Provider information ↗Checked 2026-10-13
Before you use it
Source is AGPL-3.0: https://github.com/siyuan-note/siyuan. Commercial sync services and paid features have separate terms.
Provider terms can change. Check current pricing and usage rights before starting a project.