Compare software

Logseq vs OmniOutliner: catalog facts
Logseq	OmniOutliner
Freemium The app is free and open source under the AGPL 3.0. Logseq Sync is a paid service, and…	Paid One-time purchase or subscription covering all Apple platforms, with a 14-day free trial.
Windows, macOS, Linux, Android, iOS	macOS, iOS
Notes are plain Markdown files in a folder you control Block-level linking and embedding, not just page links	Columns, including smart columns for calculations Attachments inside outlines
The database version is in beta and the project warns data loss is possible Outliner structure does not suit long-form prose	Apple platforms only Paid after the trial
Downloadable app	Downloadable app
Open source	Closed source
License: AGPL-3.0	License not stated
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 September 24, 2026

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