MediaWiki is the open-source engine behind Wikipedia. Organisations can self-host or use managed services to run internal wikis with powerful markup, version history, access controls, and a large plugin ecosystem.
| Pricing from | Free (open source; hosting varies) |
| Best for | Large enterprises and organisations requiring full control, zero recurring costs, and customisation through code |
| Website | www.mediawiki.org |
Strengths and trade-offs
- Completely free and open source with no vendor lock-in; mature, stable, and highly customisable
- Powerful collaborative editing, comprehensive version history, and robust permission system
- Steep technical overhead for self-hosting; poor out-of-the-box UI compared to modern platforms
- Requires developer expertise for maintenance, upgrades, and customisation; limited modern integrations
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