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Outliner review

Free#28 of 30 in Outliner Software

A focused, open-source web outliner for keyboard-first OPML workflows.

6.2/10Editor score
Outliner6.2 Visit Outliner

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Outliner is a browser-based, open-source application for creating, editing, importing, and exporting OPML outlines. It suits individuals who want a lightweight editor for structured outlines, subscription lists, or linked OPML files. The workflow centers on keyboard-driven editing, with Enter, Tab, Shift-Tab, and Alt-arrow shortcuts, alongside collapse and expand controls, drag-to-reorder editing, and browser local-storage persistence.

Its strongest distinction is the depth of its OPML workflow. Users can import and export OPML files, inspect and edit node attributes, create RSS subscription-list nodes with feed attributes, and include or transclude other OPML files. Hoisting lets users focus on a subtree and return with Dehoist, while a read-only URL viewer supports public OPML files. These features make Outliner more than a basic nested-list editor for users whose work already depends on OPML and RSS structures.

The trade-off is focus. Outliner is designed around browser-based outlining and OPML rather than a broad workspace with a wider set of integrations or collaboration features. Its web-only platform and client-side local-storage model fit personal, lightweight workflows, but may be less suitable for teams that need shared editing or a broader application ecosystem. Choose it for direct, keyboard-first OPML composition and linked subscription lists; choose an alternative if your priority is a wider productivity platform beyond structured OPML files.

Outliner pros and cons

  • Where it wins
    • Keyboard shortcuts support fast outline editing and navigation.
    • Hoisting, collapsing, and drag-to-reorder keep large outlines organized.
    • OPML import/export, RSS nodes, and transclusion support linked workflows.
  • Where it doesn't
    • Its feature scope is narrow beyond OPML-focused outlining.
    • Browser local-storage persistence may not suit shared team workflows.
    • Web-only access limits platform choice.

Outliner fact sheet, pricing and score →

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