Outliner
Outliner: A focused, open-source web outliner for keyboard-first OPML workflows. Ranked #28 of 30 in Outliner Software by our editors (6.2/10); pricing: Open source; best for browser-based OPML specialists.
At a glance
- Editor score6.2 / 10
- PricingOpen source
- Best forBrowser-based OPML specialists
- Paid fromFree
- App platformsweb
- Facts checked20 Sep 2026

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.
Our verdict on Outliner
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.
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Outliner pricing
Outliner fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| App platforms | web |
| Export formats | OPML |
| Offline access | Yes |
| Markdown support | Not verified |
| Real-time collaboration | Not verified |
| Backlinks | Not verified |
| Navigation modes | collapse/expand, hoist, keyboard navigation, drag-to-reorder |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Docs |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 2 integrations: RSS feeds, OPML |
| Pricing | Open source |
| Website | outliner.andysylvester.com |
| Facts checked | 20 Sep 2026 |
Outliner integrations
Outliner lists 2 integrations on its own site.
- RSS feeds
- OPML
Alternatives to Outliner
- CheckvistA flexible collaborative outliner with unlimited nesting, offline access, and low-cost task features.9.4
- DynalistDeep outlining and cross-platform access make Dynalist a strong fit for power users.9.2
- WorkflowyA mature outliner with broad platform coverage, sharing, exports, integrations, and AI tools.9.0
See all Outliner alternatives →
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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Outliner for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Featured on iTechGuides
Outliner is listed in our Outliner Software directory. Add the badge to your site — it links back to this page.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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