About Wiki.js
Wiki.js is an open source wiki that you host yourself. It is built on Node.js and PostgreSQL and can run in Docker or on Kubernetes.
What it does
It gives a team a shared wiki where pages can be written in Markdown, in a visual editor, in AsciiDoc or in other formats. Pages can include diagrams from Mermaid, PlantUML and Kroki, math with KaTeX, and content blocks such as galleries, maps and YouTube embeds. Organization and access tools help larger wikis stay tidy as they grow.
Key features
- Markdown editor with a live side-by-side preview
- Diagrams from Mermaid, PlantUML and Kroki
- Math rendering and syntax highlighting
- Excalidraw boards that live inside a page
- Feedback boards and blog sections
Who it's for
Teams and communities that want a wiki they control. It suits people who are comfortable running a Node.js and PostgreSQL service on their own servers or in containers.
Pricing and good to know
Wiki.js is free and open source under the AGPL-3.0 license. Your main costs are the hosting, server and database you run it on. The project also takes backers, according to its site. Because you host it yourself, backups, upgrades and security updates are your responsibility.
Highlights
- Markdown editor with live side-by-side preview
- Diagrams from Mermaid, PlantUML and Kroki
- Math rendering with KaTeX
- Excalidraw boards embedded in pages
- Runs in Docker or on Kubernetes
