Nextcloud Talk vs BigBlueButton
Both are free/open-source alternatives to Zoom. Here's how they stack up — verified facts, no spin.
Nextcloud Talk
Self-hosted calls, chat, and screen-sharing inside a suite you own.
Nextcloud Talk adds audio/video calls, group chat, webinars, and screen-sharing to Nextcloud, the open-source file-and-collaboration suite. Calls are peer-to-peer and end-to-end encrypted, and everything runs on your own Nextcloud server, so it is the strongest Zoom alternative for anyone who already self-hosts Nextcloud or wants meetings living next to their files and calendar rather than in a separate cloud.
BigBlueButton
Open-source virtual classroom and web conferencing.
BigBlueButton is an open-source web-conferencing system built for online teaching, with slides, whiteboard, breakout rooms, and polls. It is the strongest fit when the priority is education and interactive sessions rather than casual calls.
Side by side
| Nextcloud Talk | BigBlueButton | |
|---|---|---|
| Sovereignty Score | 88 | 84 |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Local-first | Yes | No |
| License | AGPL-3.0 | LGPL-3.0 |
| Pricing | Free / open-source (self-host as part of Nextcloud) | Free / open-source (self-host) |
Nextcloud Talk edges it on the Sovereignty Score, but the right pick depends on the trade-offs below.
Nextcloud Talk
Strengths
- +End-to-end encrypted calls on your own server
- +Chat, calls, files, and calendar in one owned suite
- +No account or per-host fees
- +Public meeting links guests can join from a browser
Trade-offs
- −Best value only if you already run (or want to run) Nextcloud
- −Large group calls need a High Performance Backend (extra setup)
- −You operate the Nextcloud server yourself
BigBlueButton
Strengths
- +Purpose-built for teaching
- +Whiteboard, breakouts, polls
- +Self-hostable
Trade-offs
- −Heavier to install and run
- −Overkill for simple calls
Facts verified 2026-07-12. Licenses and pricing change — spotted something out of date? That's a correction we want.