Free alternatives to Confluence

AppFlowy does Confluence's job (shared docs, real-time editing, structure) without the seat math, provided you host it. Self-hosting the AGPL-3.0 stack removes the member and storage caps completely, so a team of 40 costs the same as a team of 4. Be clear about what free means here: the hosted plan covers one workspace with up to 2 members, unlimited pages and blocks, and 5 GB of storage as of July 2026, so an unlimited team means running Docker, Postgres, and object storage yourself. It is also local-first, so it keeps working on a bad connection, which Confluence does not.

• Free plan, paid from $10/month (as of July 2026)
• Singapore
• Open source (AGPL-3.0)

Best for:

Teams pushing past Confluence's 10-user ceiling who have someone willing to run a Docker stack

The catch:

Unlimited free only exists if you self-host; the hosted free tier stops at 2 members, and database relations and rollups are thin.

Confluence pages usually end up embedding a diagram made somewhere else, and AFFiNE removes that round trip by making the page and the canvas the same object. The free plan gives 10 GB of cloud storage, up to 3 workspace members, 3 logged-in devices, 7 days of version history, and a 10 MB file cap, plus unlimited local workspaces that do not count against the quota (as of July 2026). The client is MIT licensed and self-hosting is free, which is the route to a team larger than three. The server directory carries its own separate license, so read that before you build anything commercial on top.

• Free plan, paid from $6.75/month (as of July 2026)
• Singapore
• Open source (MIT (client); server directory under a separate license)

Best for:

Small documentation teams whose specs always need a diagram sitting next to the text

The catch:

3 members and 3 logged-in devices on free is tight, and it ships fast enough that sync and rendering bugs still surface.

If the problem with Confluence is the editor and the search rather than the bill, Notion is the straight swap, and it is the only tool on this list that needs no server admin from you. The free plan is built around an individual workspace with 5 MB file uploads, 10 guests, and 7 days of page history (as of July 2026), so a documentation team lands on paid at $10 per member per month, or $20 on Business. That is more per seat than Confluence Standard's roughly $6.05, so pick Notion for the writing experience and the template and integration ecosystem, not to save money. It also needs a connection for almost everything, so it does not fix Confluence's offline gap.

• Free plan, paid from $10/month (as of July 2026)
• United States

Best for:

Teams leaving Confluence because writing in it is a chore, not because of the price

The catch:

A real team is a paid plan at $10 per member per month, which costs more per seat than the Confluence Standard tier you were escaping.

Anytype is the pick when the documentation is sensitive enough that hosting matters more than polish. The free plan includes 10 shared spaces, unlimited objects stored locally, and full end-to-end encryption, with 100 MB of remote storage for syncing and sharing (as of July 2026). Paid tiers from $4 per month buy more sync storage rather than unlocking features, and you can self-host an any-sync node instead of paying at all. Structure comes from typed objects and relations instead of spaces and page trees, which is more flexible than Confluence and slower to learn.

• Free plan, paid from $4/month (as of July 2026)
• Switzerland

Best for:

Small teams documenting things they would rather no hosting company could read

The catch:

100 MB of free remote storage fills fast with screenshots, there is no web app, and the license is source-available rather than OSI open source.

Joplin gets used as a small team knowledge base more often than its note-app label suggests, because notebooks and sub-notebooks behave a lot like a Confluence page tree. The apps are free and AGPL-3.0 on every platform with unlimited notes, and sync goes to Dropbox, OneDrive, Nextcloud, WebDAV, or S3 at no cost. Sharing is where money or effort enters: notebook sharing and publishing arrive on Joplin Cloud Pro at EUR 4.79 per month billed yearly, with Teams at EUR 6.69 per user per month billed yearly and a two-user minimum, or you self-host Joplin Server in Docker to get the same sharing features for free (as of July 2026).

• Free plan, paid from €2.4/month (as of July 2026)
• United Kingdom
• Open source (AGPL-3.0-or-later)

Best for:

Technical teams that want an owned, encrypted documentation store and can run Joplin Server

The catch:

The interface looks a decade old next to Confluence, and search is literal and slow once the collection is large.

Plenty of Confluence instances are one person maintaining docs everyone else reads, and for that Obsidian is faster and free. There is no note, device, or feature limit on personal use, pages open instantly where Confluence pages load, and everything stays as Markdown files you can move anywhere. It is a weak fit for an actual team: there is no real-time co-editing, and a shared vault is not the same as two people in one doc. A company of two or more people using it for work also needs a $50 per user per year commercial license.

• Free plan, paid from $4/month (as of July 2026)
• Canada

Best for:

One or two people who write the documentation while everyone else just reads it

The catch:

No real-time collaboration and no permissions, and team use at a company needs a $50 per user per year commercial license.