rtpengine
rtpengine backports the same DTLS and socket fixes across four maintenance branches at once.
Comparison · Meetings
BigBlueButton vs coturn
A side-by-side editorial comparison of BigBlueButton and coturn — release velocity, themes, recent moves, and the top alternatives to consider.
BigBlueButton vs coturn: at a glance
What is BigBlueButton?
BigBlueButton 4.0 rc.4 is a security-only release as the LiveKit stack hardens.
BigBlueButton 4.0.0-rc.4 contains security fixes only, including a command injection through destination_number, unauthenticated access to a meeting's audio conference and shared notes reachable by non-members. It follows rc.2, also security-only, and rc.3, which focused on LiveKit reconnection and test stability. The project still recommends 3.0.x for production.
What is coturn?
coturn ships three minor versions in six weeks, packaged as Docker images on three registries.
The tracked feed for coturn, the open-source TURN/STUN server, is Docker image releases: 4.16.0, 4.17.0, 4.17.1, 4.17.2 and 4.18.0 between late July and early September 2026. Each is published to Docker Hub, GitHub Container Registry and Quay.io, and the release notes here point to the upstream changelog without listing changes.
BigBlueButton vs coturn: editorial side-by-side
BigBlueButton
5.0MEETINGS
BigBlueButton 4.0 rc.4 is a security-only release as the LiveKit stack hardens.
◆ Current state
BigBlueButton 4.0.0-rc.4 contains security fixes only, including a command injection through destination_number, unauthenticated access to a meeting's audio conference and shared notes reachable by non-members. It follows rc.2, also security-only, and rc.3, which focused on LiveKit reconnection and test stability. The project still recommends 3.0.x for production.
◆ Where it's heading
The 4.0 cycle has moved from architecture (LiveKit as the only media path, BlockNote notes, Java 21) to hardening. Two security-only candidates in a month show the new LiveKit audio and notes surfaces are getting close scrutiny before GA.
◆ Prediction
Expect 4.0.0 GA once the release-candidate cadence quiets, likely preceded by at least one more rc. The steady flow of advisories makes the exact timing unclear.
coturn
2.5MEETINGS
coturn ships three minor versions in six weeks, packaged as Docker images on three registries.
◆ Current state
The tracked feed for coturn, the open-source TURN/STUN server, is Docker image releases: 4.16.0, 4.17.0, 4.17.1, 4.17.2 and 4.18.0 between late July and early September 2026. Each is published to Docker Hub, GitHub Container Registry and Quay.io, and the release notes here point to the upstream changelog without listing changes.
◆ Where it's heading
The cadence picked up: three minor versions (4.16, 4.17, 4.18) landed in about six weeks, with two same-day patch images for 4.17. The project keeps container packaging in lockstep with upstream releases, which matters to operators running TURN for WebRTC in containers.
◆ Prediction
A 4.18.x patch image or a 4.19.0 release is the likely next entry, following the observed roughly two-to-four-week rhythm; the feature content is not visible from these entries.
Alternatives to BigBlueButton and coturn
Other Meetings products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either BigBlueButton or coturn.
OpenSIPS
OpenSIPS 4.0 is in release-candidate testing, with two RCs a month apart.
Kamailio
Kamailio's tracked feed shows one thing: a quiet, schema-stable 5.8 maintenance release.
JW Player
JW Player is rebuilding its VOD pipeline around CMAF, one workflow fix at a time
Restream
Restream's webinars get a registration page and a CSV of leads, turning broadcasts into a pipeline
Fourwaves
Fourwaves is polishing participant messaging after a pricing reset.
See all BigBlueButton alternatives → · See all coturn alternatives →
Recent activity from BigBlueButton and coturn
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoBigBlueButtonBigBlueButton 4.0 rc.4 patches audio and notes security flaws
- 22d agoBigBlueButtonBigBlueButton 4.0 rc.3 hardens LiveKit reconnection
- 23d agoBigBlueButtonBigBlueButton 4.0 rc.2 fixes cross-meeting security flaws
- 25d agocoturncoturn 4.18.0 Docker image released
- 1mo agoBigBlueButtonBigBlueButton 4.0 rc.1 completes the LiveKit audio migration ⚡
- 1mo agoBigBlueButtonBigBlueButton 4.0 beta.5 overhauls mobile layout
- 1mo agocoturncoturn 4.17.2 Docker image (patch)
- 1mo agocoturncoturn 4.17.1 Docker image (patch)
- 1mo agocoturncoturn 4.17.0 Docker image released
- 2mo agocoturncoturn 4.16.0 Docker image released
- 2mo agoBigBlueButtonBigBlueButton 4.0.0-beta.4 ⚡
Frequently asked questions
What is the difference between BigBlueButton and coturn?
They serve adjacent needs but don't currently overlap on shipped themes. BigBlueButton is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is BigBlueButton better than coturn?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. BigBlueButton is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Meetings products to evaluate alongside.
What are the best alternatives to BigBlueButton?
Top BigBlueButton alternatives in Meetings are ranked by recent ship velocity. Browse the "BigBlueButton alternatives" section above for the current picks, or visit /alternatives/bigbluebutton for the full list with editorial commentary on each.
What are the best alternatives to coturn?
Top coturn alternatives in Meetings are ranked by recent ship velocity. Browse the "coturn alternatives" section above for the current picks, or visit /alternatives/coturn for the full list with editorial commentary on each.