Jitsi vs BigBlueButton vs Nextcloud Talk

Jitsi splits its work across several components, and scaling depends on knowing which one carries the media. The Jitsi Videobridge (JVB) is the media router that forwards audio and video between participants, so it is the component you add when concurrency grows. Prosody is the XMPP server that carries signalling, Jicofo is the conference focus that creates and manages conference rooms and assigns each one to a bridge, and the web server serves the web app. Jibri (recording and streaming) and Jigasi (SIP dial-in) are optional containers or services that you add only if you need them. The official guidance says the default install is already configured for horizontal scaling, so adding capacity usually means installing more bridges and registering them with the central server rather than redesigning the stack.

The Jitsi scalable setup guide suggests a 4 CPU, 8 GB machine for the central server (Prosody, Jicofo and the web server) and 4 or 8 CPU with 8 GB RAM for each videobridge. Treat these as starting points from the vendor, not as a capacity commitment for your meetings. Confirm your own sizing by load testing with your typical room sizes, screen sharing and whether recording runs at the same time, because recording uses separate resources. The network side needs the same attention: HTTPS with a certificate for your real domain is required for working audio and video, and self-signed certificates cause problems, especially on mobile clients. Plan TCP 80 and 443 for the web and signalling path, and UDP 10000 for media, with 5349/TCP for TCP fallback and 3478/UDP for STUN as optional items.

Recording and dial-in are a separate design choice, not a default. Jibri and Jigasi add their own hosts, dependencies and firewall rules, and they change the load on the bridges and the central server. Decide early whether participants must be recorded, whether external callers must join by phone, and who will operate those services. If the answer is no, leave them out of the first build and keep the bridge pool simple. If the answer is yes, size and test those components as their own workload before you commit to a concurrency target.

Moving between these three video tools costs far more in user habits and archives than in software. Jitsi Meet rooms are addressed by URL, so a team that switches will change every room link that has been shared, bookmarked or pasted into calendar invitations. Nextcloud Talk rooms live inside the file platform, so people lose the conversation history and shared files attached to a room if the Nextcloud instance is replaced. BigBlueButton sessions are tied to the server that hosts them, and recordings are stored on that server's disk, so the recording archive must be exported and checked before any cutover. Before you commit, list which rooms are recurring, which recordings must be kept for policy reasons, and who owns each room.

BigBlueButton adds two switching constraints. If the team learning platform embeds BigBlueButton, the LMS connection and any Greenlight or LTI configuration must be rebuilt on the new host, and identity must be mapped again. Greenlight v3 can use OpenID Connect, so confirm which identity provider claims map to which roles before users arrive. The most important constraint is the upgrade path: BigBlueButton 4.0 is installed on Ubuntu 24.04, and direct upgrades from 2.6, 2.7 or 3.0 are not supported, so the project recommends a clean server installation. An existing 3.0 deployment therefore cannot be upgraded in place to 4.0. Plan a new server, a parallel run and a data migration step, and confirm the exact steps in the official install documentation before setting a date.

When a team outgrows one platform, plan for the move as a new deployment rather than a version bump. A common path is to start with Nextcloud Talk for small calls next to files, then add Jitsi for larger meetings, or to start with Jitsi for meetings and add BigBlueButton when lectures need slides, polling and breakout rooms. Each addition brings its own identity integration, TURN planning, HTTPS certificates and user communication. Keep the authentication method consistent across tools where you can, and document which tool holds recordings, chat history and room definitions. Ask any implementation partner for a written migration plan that names the data stores, the cutover window and the rollback step for each platform.

Nextcloud organizations often keep Talk for chat, file sharing and quick one-to-one or small group calls, then add Jitsi for larger meetings. The condition that makes this pair sensible is a participant count that Talk does not handle well without the High Performance Backend. Without that backend, every participant sends a stream to every other participant, and Talk usually scales to about 5 to 20 users in a call, according to the Talk scalability documentation. If your all-hands, external webinars or board meetings regularly exceed that range, and you do not want to buy the High Performance Backend through Nextcloud sales, a Jitsi Meet deployment that scales by adding Jitsi Videobridge instances may be the cheaper route. Confirm the Talk limits against your own bandwidth and participant profile before deciding.

The operating cost of two systems is real and recurring. You run two TLS certificates, two sets of firewall rules, two sets of TURN and media ports, two authentication paths and two upgrade cycles. Jitsi also needs its own identity decisions, since the Jitsi Docker guide offers JWT tokens, LDAP and Matrix verification, and the handbook recommends JWT over the deprecated secure domain method. Ask your team who owns each system's patching, who answers when a call fails, and whether users can tell which room they should use. A written rule such as Talk for calls under a set size and Jitsi for anything larger keeps the split understandable.

A classroom or training team has a different reason to add a separate tool. BigBlueButton offers slides with annotations, polling, breakout rooms and shared notes, which Talk does not aim to replace. Its 4.0 install needs a dedicated server with 16 GB of memory and 8 CPU cores, so it should run on its own host rather than beside Nextcloud. Keep Talk for staff chat and quick calls, and add BigBlueButton only if the teaching features justify a second server to maintain. Illustrative case: a training unit that runs two lessons a week may find one shared link workable, while a daily course schedule will justify the extra operating load.