rtpengine
rtpengine backports the same DTLS and socket fixes across four maintenance branches at once.
Comparison · Meetings
OpenSIPS vs Restream
A side-by-side editorial comparison of OpenSIPS and Restream — release velocity, themes, recent moves, and the top alternatives to consider.
OpenSIPS vs Restream: at a glance
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.
What is Restream?
Restream's webinars get a registration page and a CSV of leads, turning broadcasts into a pipeline
Restream ships about one user-facing change a week across three surfaces: the live Studio (free element positioning, live edit mode, per-scene screen shares), destinations (X chat replies and analytics, Rumble clip publishing), and Clips, which now ingests public YouTube links. The newest release gives webinars a single registration-to-replay link and exports attendee names, emails, roles and registration details to CSV.
OpenSIPS vs Restream: editorial side-by-side
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.
Restream
5.0MEETINGS
Restream's webinars get a registration page and a CSV of leads, turning broadcasts into a pipeline
◆ Current state
Restream ships about one user-facing change a week across three surfaces: the live Studio (free element positioning, live edit mode, per-scene screen shares), destinations (X chat replies and analytics, Rumble clip publishing), and Clips, which now ingests public YouTube links. The newest release gives webinars a single registration-to-replay link and exports attendee names, emails, roles and registration details to CSV.
◆ Where it's heading
The webinar line that launched in July inside Slack has its first follow-up, and it points at marketing use: capturing who registered, not just streaming to them. Alongside Clips taking outside sources, Restream is building around the broadcast on both sides, collecting audiences before it and repurposing footage after it. Studio work stays incremental polish for producers running multi-scene shows.
◆ Prediction
Expect webinar lead data to move beyond CSV export, likely into direct CRM or marketing-tool handoffs, plus more Clips sources and destinations. How far the webinar product goes into registration forms and attendee follow-up is not yet visible.
Alternatives to OpenSIPS and Restream
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 OpenSIPS or Restream.
coturn
coturn ships three minor versions in six weeks, packaged as Docker images on three registries.
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
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 OpenSIPS alternatives → · See all Restream alternatives →
Recent activity from OpenSIPS and Restream
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoRestreamTurn webinar registrations into leads
- 3d agoRestreamCreate Clips from public YouTube links
- 12d agoRestreamPosition your logo, captions, and QR codes anywhere
- 1mo agoRestreamReply to X live chat
- 1mo agoRestreamStream to X with chat replies and viewer analytics
- 1mo agoRestreamExplore viewer analytics from X
- 3mo agoOpenSIPSOpenSIPS 4.0 release candidate 2
- 4mo agoOpenSIPSOpenSIPS 4.0 enters release-candidate testing
Frequently asked questions
What is the difference between OpenSIPS and Restream?
They serve adjacent needs but don't currently overlap on shipped themes. Restream is currently shipping more aggressively (velocity 5.0 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 OpenSIPS better than Restream?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Restream is currently shipping more aggressively (velocity 5.0 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 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.
What are the best alternatives to Restream?
Top Restream alternatives in Meetings are ranked by recent ship velocity. Browse the "Restream alternatives" section above for the current picks, or visit /alternatives/restream for the full list with editorial commentary on each.