Best Outliner Software in 2026
Updated
31 outliner software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
31ranked
0free plans on this page
8 Oct 2026last checked
0 of the 6 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 26 | MemPadWindows | No signal | — | — | 1 of 6 | — | 5.2 |
| 27 | OutlinerWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 28 | OutsplineLinux | No signal | — | — | 1 of 6 | — | 5.2 |
| 29 | Kosshi OutlinerMac · iPhone | One bar | — | — | 2 of 6 | — | 5.1 |
| 30 | AI OutlinerWindows · Mac · Linux | One bar | — | — | 3 of 6 | — | 4.9 |
| 31 | OmniOutlinerMac · iPhone | No signal | — | — | 2 of 6 | — | 4.9 |
Compare all 6 in a table
| # | App | Score | Free plan | Free plan | Paid from | App platforms | Export formats |
|---|---|---|---|---|---|---|---|
| 26 | MemPad | 5.2 | No | Yes | — | — | — |
| 27 | Outliner | 5.2 | No | — | — | web | OPML |
| 28 | Outspline | 5.2 | No | Yes | — | Linux | plain text |
| 29 | Kosshi Outliner | 5.1 | No | No | — | macOS, iOS (iPhone, iPad) | Markdown, Rich Text, TextBundle, Plain Text, OPML |
| 30 | AI Outliner | 4.9 | No | No | — | Windows, macOS, Linux | OPML, PowerPoint, Word, PDF |
| 31 | OmniOutliner | 4.9 | No | No | — | macOS, iOS, iPadOS, visionOS | CSV, HTML, Dynamic HTML, OPML, plain text, RTF, DOCX, PPTX, XLSX |
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