Wiki.js is the stronger choice when the deciding factor is day-to-day wiki & knowledge base workflow fit, while MediaWiki has the clearer case when pricing shape, deployment control, or rollout risk matters more. For knowledge operations teams, the practical decision is not feature count; it is which product better supports teams trying to keep policies, product docs, and internal knowledge searchable and trusted without forcing a costly migration six months later.
Quick comparison
| Feature | Wiki.js | MediaWiki |
|---|---|---|
| Starting price | Free plan | Free plan |
| Free plan | Yes | Yes |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| G2 rating | Not listed | Not listed |
| Best for | teams that want a mature, full-featured option | teams that want open-source, self-hosted control |
| Starting price | Free plan available; paid tiers depend on usage and plan limits. | Free plan available; paid tiers depend on usage and plan limits. |
| Free plan | Yes | Yes |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Deployment model | self-hosted | self-hosted |
| Best for | teams that want a mature, full-featured option | teams that want open-source, self-hosted control |
| Primary risk | Requires internal ownership for hosting, upgrades, security patches, or support expectations. | Requires internal ownership for hosting, upgrades, security patches, or support expectations. |
Knowledge structure and navigation
Winner: Wiki.js. For knowledge structure and navigation, Wiki.js is the safer default because its catalog profile fits the way knowledge operations teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. Wiki.js is positioned as powerful open-source wiki engine, while MediaWiki is positioned as the wiki software behind wikipedia; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for teams trying to keep policies, product docs, and internal knowledge searchable and trusted, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. MediaWiki can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan.
Editor quality and content governance
Winner: Wiki.js. For editor quality and content governance, Wiki.js is the safer default because its catalog profile fits the way knowledge operations teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. Wiki.js is positioned as powerful open-source wiki engine, while MediaWiki is positioned as the wiki software behind wikipedia; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for teams trying to keep policies, product docs, and internal knowledge searchable and trusted, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. MediaWiki can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan. Adoption also depends on who touches the system every week. A tool that is powerful for admins but slow for contributors creates shadow spreadsheets, skipped updates, and cleanup meetings. In this pair, Wiki.js has the clearer adoption story for teams that want less training friction.
Search, verification, and stale content
Winner: MediaWiki. For search, verification, and stale content, MediaWiki is the safer default because its catalog profile fits the way knowledge operations teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. Wiki.js is positioned as powerful open-source wiki engine, while MediaWiki is positioned as the wiki software behind wikipedia; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for teams trying to keep policies, product docs, and internal knowledge searchable and trusted, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. Wiki.js can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan. Governance is where hidden costs show up. Compare permission boundaries, audit needs, export options, SSO expectations, and whether the deployment model matches your security review.
Permissions and external sharing
Winner: MediaWiki. For permissions and external sharing, MediaWiki is the safer default because its catalog profile fits the way knowledge operations teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. Wiki.js is positioned as powerful open-source wiki engine, while MediaWiki is positioned as the wiki software behind wikipedia; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for teams trying to keep policies, product docs, and internal knowledge searchable and trusted, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. Wiki.js can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan.
Migration and export control
Winner: Wiki.js. For migration and export control, Wiki.js is the safer default because its catalog profile fits the way knowledge operations teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. Wiki.js is positioned as powerful open-source wiki engine, while MediaWiki is positioned as the wiki software behind wikipedia; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for teams trying to keep policies, product docs, and internal knowledge searchable and trusted, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. MediaWiki can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan.
Cost for growing knowledge bases
Winner: Wiki.js. For cost for growing knowledge bases, Wiki.js is the safer default because its catalog profile fits the way knowledge operations teams usually evaluate this decision: workflow fit, rollout cost, ownership model, and how quickly the team can prove value with real data. Wiki.js is positioned as powerful open-source wiki engine, while MediaWiki is positioned as the wiki software behind wikipedia; that difference matters when the comparison moves from a feature checklist into daily operation. If your team is using this category for teams trying to keep policies, product docs, and internal knowledge searchable and trusted, test the winner against one production workflow, one admin workflow, and one reporting workflow before committing. MediaWiki can still be the better pick when its ecosystem, existing contracts, or migration path reduces change management, but it asks for a more deliberate rollout plan. Cost should be modeled over twelve months, not from the first plan label. Include seats, usage, storage, integrations, onboarding, and the time spent recreating automations.
Pricing deep-dive
Wiki.js
- Free plan: available for evaluation or limited production use in wiki & knowledge base.
- Entry paid tier: starts from free, with paid usage or feature upgrades varying by plan.
- Pricing model: open-source; license is open-source; deployment type is self-hosted.
- Open-source economics: subscription cost may be replaced by hosting, upgrades, backups, and internal maintenance.
MediaWiki
- Free plan: available for evaluation or limited production use in wiki & knowledge base.
- Entry paid tier: starts from free, with paid usage or feature upgrades varying by plan.
- Pricing model: open-source; license is open-source; deployment type is self-hosted.
- Open-source economics: subscription cost may be replaced by hosting, upgrades, backups, and internal maintenance.
Pricing verdict: Neither product has a clean universal pricing win from catalog data alone. Wiki.js is cataloged as: Free plan: available for evaluation or limited production use in wiki & knowledge base. Entry paid tier: starts from free, with paid usage or feature upgrades varying by plan. Pricing model: open-source; license is open-source; deployment type is self-hosted. Open-source economics: subscription cost may be replaced by hosting, upgrades, backups, and internal maintenance. MediaWiki is cataloged as: Free plan: available for evaluation or limited production use in wiki & knowledge base. Entry paid tier: starts from free, with paid usage or feature upgrades varying by plan. Pricing model: open-source; license is open-source; deployment type is self-hosted. Open-source economics: subscription cost may be replaced by hosting, upgrades, backups, and internal maintenance. Build the comparison around the plan that supports your real production workflow, not the cheapest plan each vendor advertises.
How to migrate from Wiki.js to MediaWiki
What real users say
Wiki.js: Wiki.js users usually praise the parts that match its positioning as powerful open-source wiki engine. The recurring criticism is predictable: once teams push it beyond that core use case, they run into plan limits, integration gaps, admin overhead, or migration work that was not obvious during evaluation.
MediaWiki: MediaWiki users usually praise the parts that match its positioning as the wiki software behind wikipedia. Complaints tend to cluster around pricing clarity, onboarding effort, reporting flexibility, or the amount of manual process needed to keep the system accurate over time.
Sources: Pattern synthesized from catalog data, vendor positioning, public pricing availability, and common review themes; verify current review excerpts before quoting users directly.
Final verdict
Choose Wiki.js if...
- Choose Wiki.js if your team needs powerful open-source wiki engine and that positioning matches the work people will do every week.
- Choose Wiki.js if its pricing model, deployment type, and governance profile are easier to approve than forcing MediaWiki into the same workflow.
- Choose Wiki.js if migration risk is lower because your current data model, integrations, or team habits already resemble its default setup.
Choose MediaWiki if...
- Choose MediaWiki if your team needs the wiki software behind wikipedia and would otherwise customize Wiki.js heavily to fit.
- Choose MediaWiki if it gives knowledge operations teams a clearer path for teams trying to keep policies, product docs, and internal knowledge searchable and trusted without adding admin work after launch.
- Choose MediaWiki if its free plan, paid entry point, open-source status, or managed service model better fits your procurement constraints.
Consider neither if: Consider neither if you need a fundamentally different wiki & knowledge base model: open-source control when both are managed, managed support when both require ownership, or a narrower specialist tool for one workflow. In that case, review the broader category page and adjacent comparisons before committing.