rtpengine
rtpengine backports the same DTLS and socket fixes across four maintenance branches at once.
Comparison · Meetings
coturn vs OpenSIPS
A side-by-side editorial comparison of coturn and OpenSIPS — release velocity, themes, recent moves, and the top alternatives to consider.
coturn vs OpenSIPS: at a glance
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.
What is OpenSIPS?
OpenSIPS 4.0 is in release-candidate testing, with two RCs a month apart.
OpenSIPS, the open-source SIP proxy and server, has two tracked entries: 4.0.0-rc1 in May and 4.0.0-rc2 in June 2026. Both release notes are one-line announcements, so the specific 4.0 changes are not visible in the feed.
coturn vs OpenSIPS: editorial side-by-side
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.
OpenSIPS
0.0MEETINGS
OpenSIPS 4.0 is in release-candidate testing, with two RCs a month apart.
◆ Current state
OpenSIPS, the open-source SIP proxy and server, has two tracked entries: 4.0.0-rc1 in May and 4.0.0-rc2 in June 2026. Both release notes are one-line announcements, so the specific 4.0 changes are not visible in the feed.
◆ Where it's heading
The product is moving toward a 4.0 major release through a standard RC cycle. A second RC a month after the first suggests stabilization work rather than new scope, but the entries do not say what 4.0 changes.
◆ Prediction
A 4.0.0 general release is the next expected step; what it contains cannot be read from these announcements.
Alternatives to coturn and OpenSIPS
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 coturn or OpenSIPS.
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
BigBlueButton
BigBlueButton 4.0 rc.4 is a security-only release as the LiveKit stack hardens.
Fourwaves
Fourwaves is polishing participant messaging after a pricing reset.
See all coturn alternatives → · See all OpenSIPS alternatives →
Recent activity from coturn and OpenSIPS
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 25d agocoturncoturn 4.18.0 Docker image released
- 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
- 3mo agoOpenSIPSOpenSIPS 4.0 release candidate 2
- 4mo agoOpenSIPSOpenSIPS 4.0 enters release-candidate testing
Frequently asked questions
What is the difference between coturn and OpenSIPS?
They serve adjacent needs but don't currently overlap on shipped themes. coturn is currently shipping more aggressively (velocity 2.5 vs 0.0), 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 coturn better than OpenSIPS?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. coturn is currently shipping more aggressively (velocity 2.5 vs 0.0), 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 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.
What are the best alternatives to OpenSIPS?
Top OpenSIPS alternatives in Meetings are ranked by recent ship velocity. Browse the "OpenSIPS alternatives" section above for the current picks, or visit /alternatives/opensips for the full list with editorial commentary on each.