Outline
Alternative to Notion
Extensible wiki for your team.
Actively maintained
Real momentum
BUSL-1.1
Simple, easy to use wiki software using markdown.
Otter Wiki is an open-source wikis project, with 1.5k GitHub stars and a health score of 86/100. It committed 496 times in the last twelve months across 11 of those months, and its status is actively maintained. Licence: MIT. It has real momentum, so treat it as a live competitor rather than a stale repository.
| Status | Actively maintained — Committed within the last 45 days. |
|---|---|
| Last commit | 2026-08-08 |
| Days since last commit | 9 |
| Commits, last 3 months | 156 |
| Commits, last 12 months | 496 |
| Months with activity | 11 of 12 |
| Last release | 2026-08-05 |
| Archived | No |
| Licence | MIT |
| Category | Wikis |
Health score combines commit recency, twelve-month commit volume, months with activity, release recency and archive state. Metadata refreshed August 2026.
Permissive (MIT, Apache, BSD): you can fork it, close the source and sell it. Lowest legal friction for a commercial product.
This matters most when you plan to sell a hosted version. A permissive licence means anyone — including a competitor with more capital — can do the same, so your defensibility has to come from distribution, support or data, not from the code.
Otter Wiki is shipping code consistently, so a buyer comparing your product will find a maintained free option. Price and position against the total cost of self-hosting it, not against the paid incumbent's list price.
Winnable, but differentiation is not optional. Pick one underserved segment and be visibly better for it rather than competing feature-for-feature with a free tool.
Actively maintained. Otter Wiki recorded 496 commits over the last twelve months, with activity in 11 of those months and 156 commits in the last quarter. Last commit: 2026-08-08. Last release: 2026-08-05. Committed within the last 45 days.
Otter Wiki is published under MIT. Permissive (MIT, Apache, BSD): you can fork it, close the source and sell it. Lowest legal friction for a commercial product.
26 open-source implementations, 12 of them actively maintained, led by Outline at 40k stars. Saturation score 50/100 — Contested. Several maintained alternatives exist, but no one owns the category.
Alternative to Notion
Extensible wiki for your team.
Wikis
Modern, lightweight and powerful wiki app using Git and Markdown.
Alternative to Team knowledge base
Collaborative wiki and documentation software (alternative to Confluence, Notion).
Wikis
Simple, Git-powered wiki with a sweet API and local frontend.
Wikis
Reusable non-linear personal web notebook.
Wikis
Easy to use, lightweight, standards-compliant wiki engine with a simple syntax allowing reading the data outside the wiki. All data is stored in plain text files, therefore no database is required.
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