Outline
Alternative to Notion
Extensible wiki for your team.
Actively maintained
Real momentum
BUSL-1.1
Second generation wiki that allows the user to extend its functionalities with a powerful extension-based architecture.
XWiki is an open-source wikis project positioned as an alternative to Knowledge Bases, with 1.3k GitHub stars and a health score of 100/100. It committed 3210 times in the last twelve months across 12 of those months, and its status is actively maintained. Licence: LGPL-2.1. 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 | 2026-08-15 |
| Days since last commit | 2 |
| Commits, last 3 months | 985 |
| Commits, last 12 months | 3210 |
| Months with activity | 12 of 12 |
| Last release | 2026-08-13 |
| Archived | No |
| Licence | LGPL-2.1 |
| Category | Wikis |
| Positioned against | Knowledge Bases |
Health score combines commit recency, twelve-month commit volume, months with activity, release recency and archive state. Metadata refreshed August 2026.
Copyleft (GPL, AGPL, MPL): derivative work must stay open. AGPL also covers software offered over a network, which blocks most closed SaaS wrappers.
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.
XWiki 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. XWiki recorded 3210 commits over the last twelve months, with activity in 12 of those months and 985 commits in the last quarter. Last commit: 2026-08-15. Last release: 2026-08-13. Committed within the last 45 days.
XWiki is published under LGPL-2.1. Copyleft (GPL, AGPL, MPL): derivative work must stay open. AGPL also covers software offered over a network, which blocks most closed SaaS wrappers.
XWiki targets the same job as Knowledge Bases and is actively shipping. Adoption sits at 1.3k stars. Whether it is a good replacement depends on your deployment constraints: self-hosting adds infrastructure, upgrade and security work that a commercial subscription absorbs for you.
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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