Confluence alternatives: 8 open-source picks
These 8 Confluence alternatives replace it for $0, led by Outline, Wiki.js and Docmost. All 8 are open source. License, stars and last commit checked by hand on 2026-08-29. No trials, no crippled tiers.
Fast, collaborative team wiki and knowledge base with slick editor
licenseBSL-1.1
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
A modern wiki with enough knobs to remind you that you are now the administrator
licenseAGPL-3.0
runsyour server
installDocker Compose with PostgreSQL, or a Node.js package plus a supported database
dataPages, users, authentication data, and history in the configured database; optional storage modules can mirror content and assets to Git, local disk, or cloud storage
the catch vs ConfluenceIt lacks Confluence's mature enterprise templates, macros, whiteboards, marketplace and Atlassian integrations, while shifting hosting and upgrades to you.
setupYou must provision a database and persistent volumes, then configure backups and a TLS reverse proxy for public use
facts verified 2026-08-11
Confluence with less ceremony and a Docker bill
licenseAGPL-3.0
runsyour machine or their cloud
installHosted signup or Docker Compose with PostgreSQL and Redis
dataPages, users, comments, and history in PostgreSQL; jobs/cache in Redis; attachments in a persistent local volume by default or S3/Azure Blob
the catch vs ConfluenceIt is simpler and faster, but has fewer enterprise macros, workflow controls, templates, marketplace integrations and Jira-native connections than Confluence.
setupSelf-hosting requires Docker, a strong APP_SECRET, database credentials, persistent volumes, and normally a domain, TLS reverse proxy, and SMTP
facts verified 2026-08-11
A wiki organized like a bookshelf; gloriously opinionated and much less flexible than Confluence
licenseMIT
runsyour server
installFresh Ubuntu install script or manual PHP/MySQL setup
dataPages, users, permissions, and settings in MySQL/MariaDB; uploaded images and files in the server filesystem or configured object storage
the catch vs ConfluenceIts compulsory shelf/book/chapter structure and smaller extension surface are far less flexible than Confluence spaces, macros, databases, whiteboards and Jira-connected workflows.
setupThe official script expects a fresh Ubuntu host; manual installs require PHP extensions, a database, writable storage, mail, and TLS
facts verified 2026-08-11
Confluence's grown-up open-source cousin; powerful enough to require an actual administrator
licenseLGPL-2.1
runsyour server
installOfficial Docker Compose stack, Debian package, or Java application-server distribution
dataWiki documents, objects, users, metadata, and usually attachments in a relational database; configuration, extensions, caches, and optional attachment files in the permanent directory
the catch vs ConfluenceIt can approach Confluence's depth, but doing so carries a much heavier Java/Solr/database administration burden and less seamless Atlassian ecosystem integration.
setupThe production setup is a heavyweight Java service with a database, permanent storage, Solr, backups, and TLS to administer
facts verified 2026-08-11
Kanban and project boards, a Trello/Notion-boards alternative from Mattermost
licenseMIT/AGPL dual
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Realtime kanban board that feels exactly like Trello, on your own server.
licenseFair Use (source available)
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Self-hosted to-do and task management with lists, gantt, and kanban views
licenseAGPL-3.0
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
What each one is, in full: Outline · Wiki.js · Docmost · BookStack · Focalboard
last updated 2026-08-29 · no votes, no pay-to-list · just what's real
the usual suspects · recommended everywhere, rejected here
AppFlowyThe app is open-source, but the official free self-hosted collaboration tier is one seat plus guests
OutlineA favourite self-hosted wiki recommendation; on-prem now starts at $10 a month and cloud is a 30-day trial
how to choose a Confluence alternative
Easiest to get running
Focalboard — a one-click install, no server to maintain.
Most proven
Outline, with 40,000 GitHub stars — the largest community of the 8, which usually means more answers when something breaks.
Needs real ops to self-host
XWiki is capable but expects someone to run a server, updates and backups. Budget for that before choosing it.
what you give up by leaving Confluence
- large integration catalog
- mobile capture and notifications
- real-time multiplayer
- enterprise permissions
None of the picks above covers all of it. The full verdict says which gaps matter.
Confluence alternatives at a glance
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Outline | BSL-1.1 | docker to self-host | self-hosted, web | 40,000 | 2026-08 |
| Wiki.js | AGPL-3.0 | docker to self-host | web, self-hosted | 28,700 | 2026-05 |
| Docmost | AGPL-3.0 | docker to self-host | web, self-hosted | 21,300 | 2026-08 |
| BookStack | MIT | docker to self-host | web, self-hosted | 18,971 | 2026-07 |
| XWiki | LGPL-2.1 | self-host, real ops | web, self-hosted | 1,300 | 2026-08 |
| Focalboard | MIT/AGPL dual | one-click install | self-hosted, web | 26,000 | 2026-08 |
| Planka | Fair Use (source available) | one-click install | self-hosted, web | 10,000 | 2026-08 |
| Vikunja | AGPL-3.0 | one-click install | self-hosted, web | 5,000 | 2026-08 |
why people still pay for Confluence
Confluence: Teams pay because shared state, notifications, permissions, and migrations are harder than the visible board or list.
questions about switching from Confluence
Is there an open-source alternative to Confluence?
Yes: Outline, Wiki.js, Docmost and 5 more. Every tool on this page is open source: no trials, no crippled tiers.
Can open source really replace Confluence?
Our verdict is YES. Outline (40k stars), Wiki.js (29k stars), Focalboard (26k stars) are mature open-source replacements for Confluence — self-host with docker and stop paying. The full verdict, and what you give up by switching, is at caniopensourceit.online/confluence.
What is the easiest open-source Confluence alternative to set up?
Focalboard — a one-click install, no server to maintain.
What is the most popular open-source Confluence alternative?
By GitHub stars, Outline (40,000). Wiki.js is next with 28,700.
