Compare software

OmniOutlinerOrg mode
Paid

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

 Free

Free and open source, with optional support through Liberapay.

macOS, iOS Windows, macOS, Linux
  • Columns, including smart columns for calculations
  • Attachments inside outlines
  • Notes, tasks, agenda and documents in one plain text format
  • Files are easy to sync and version control
  • Apple platforms only
  • Paid after the trial
  • Requires GNU Emacs for the full feature set
  • Steep learning curve for people new to Emacs
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 24, 2026

Checked September 23, 2026

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