Compare software

Roam ResearchOmniOutliner
Paid

Paid subscription; current plans are listed on the Roam Research site.

 Paid

One-time purchase or subscription covering all Apple platforms, with a 14-day free trial.

Web macOS, iOS
  • Linked notes for building a graph of ideas
  • Outline-style writing that feels like a bulleted list
  • Columns, including smart columns for calculations
  • Attachments inside outlines
  • Little detail is published on the homepage
  • Proprietary with no open-source version
  • Apple platforms only
  • Paid after the trial
Web application, Hosted service Downloadable app
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 24, 2026

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