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Comparison · Meetings
SRS vs BigBlueButton
A side-by-side editorial comparison of SRS and BigBlueButton — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:webrtc
SRS vs BigBlueButton: at a glance
What is SRS?
SRS opens a 7.0 line built on a Go proxy tier, and drops features it no longer wants to carry.
SRS shipped the stable 6.0 line's first release on 12 August and, three hours later, the first development build of 7.0. The 6.0 line is now in pure maintenance — the r1 changelog is seven merges of DVR, WebRTC and edge fixes. Everything new is in 7.0-d0: RTSP playback, RTMPS, IPv6 across every protocol, HEVC in both directions between RTMP and WebRTC, and HLS fMP4 segments for HEVC and LL-HLS.
What is BigBlueButton?
BigBlueButton 4.0 enters release candidate with LiveKit fully replacing the legacy audio stack.
BigBlueButton is in its final stretch to 4.0 GA, with three release candidates shipping in September 2026. The 4.0 release is a near-complete architectural rebuild: LiveKit has replaced SIP.js and mediasoup as the default media transport, BlockNote replaced the old shared notes engine, and the mobile layout was overhauled. RC2 shipped security fixes for a cross-meeting presentation injection vulnerability, urging immediate admin updates.
SRS vs BigBlueButton: editorial side-by-side
SRS
6.3MEETINGS
SRS opens a 7.0 line built on a Go proxy tier, and drops features it no longer wants to carry.
◆ Current state
SRS shipped the stable 6.0 line's first release on 12 August and, three hours later, the first development build of 7.0. The 6.0 line is now in pure maintenance — the r1 changelog is seven merges of DVR, WebRTC and edge fixes. Everything new is in 7.0-d0: RTSP playback, RTMPS, IPv6 across every protocol, HEVC in both directions between RTMP and WebRTC, and HLS fMP4 segments for HEVC and LL-HLS.
◆ Where it's heading
The project is trading breadth of legacy surface for a narrower, better-covered core. 7.0-d0 removes the embedded GB28181 SIP server, multi-threading, Cygwin, and most configuration hot reload, while introducing a Go proxy server and origin-cluster architecture alongside the C++ media core. Protocol coverage keeps generalizing — each release makes a codec or an address family a property of the server rather than of one delivery path.
◆ Prediction
Expect the 7.0 line to run a long alpha and beta train the way 6.0 did, with the Go proxy and origin clustering carrying most of the remaining work and 6.0 continuing to receive backported fixes in parallel.
BigBlueButton
6.3MEETINGS
BigBlueButton 4.0 enters release candidate with LiveKit fully replacing the legacy audio stack.
◆ Current state
BigBlueButton is in its final stretch to 4.0 GA, with three release candidates shipping in September 2026. The 4.0 release is a near-complete architectural rebuild: LiveKit has replaced SIP.js and mediasoup as the default media transport, BlockNote replaced the old shared notes engine, and the mobile layout was overhauled. RC2 shipped security fixes for a cross-meeting presentation injection vulnerability, urging immediate admin updates.
◆ Where it's heading
The LiveKit migration that began in 3.x security patches has culminated in rc.1's 'LiveKit as audio state source' refactor — the legacy audio path is gone. Multi-room sessions with membership-based tokens and automatic token refresh enable scenarios (breakout listen-in, large conferences) that the old bridge couldn't cleanly support. A 4.0 GA release is imminent given the RC cadence.
◆ Prediction
4.0 GA will ship within 2-3 weeks based on the RC pace. Post-GA focus will shift to hardening the LiveKit multi-room session model and expanding BlockNote capabilities (Markdown export landed in beta.4; more collaborative editing features likely next). The successful migration may influence other open-source video conferencing projects still running legacy SFU stacks.
Alternatives to SRS and BigBlueButton
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 SRS or BigBlueButton.
Fourwaves
Fourwaves adds custom domain support for event websites, removing the hosted-subdomain constraint for conference organizers
JW Player
JW Player automates CMAF rendition ladders and sharpens ad attribution by player and placement
Nextcloud Talk Desktop
Nextcloud Talk Desktop is approaching Talk v25 stable while its July managed-config feature unlocks enterprise mass deployment for the first time.
Nextcloud Talk
Nextcloud Talk v25 adds classified conversations and an owner role, targeting regulated enterprise deployments.
Element Call
Element Call is removing its legacy architecture — the federated multi-SFU model is now the only option.
See all SRS alternatives → · See all BigBlueButton alternatives →
Recent activity from SRS and BigBlueButton
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoBigBlueButtonBigBlueButton 4.0-rc.3: LiveKit resilience hardening, configurable whiteboard zoom
- 5d agoBigBlueButtonBigBlueButton 4.0-rc.2: security fixes — update immediately
- 14d agoBigBlueButtonBigBlueButton 4.0-rc.1: LiveKit becomes sole audio source, multi-room sessions land ⚡
- 1mo agoBigBlueButtonBigBlueButton 4.0-beta.5: mobile layout rebuilt, dark mode auto-switch, audio settings
- 1mo agoSRSSRS 7.0-d0: Go proxy tier, RTSP playback, IPv6 across protocols ⚡
- 1mo agoSRS6.0-r1: DVR, WebRTC and edge fixes on the stable line
- 1mo agoBigBlueButtonBigBlueButton 4.0-beta.4: LiveKit default (SIP.js removed), BlockNote default, Java 21 ⚡
- 3mo agoBigBlueButtonBigBlueButton 4.0-beta.3: Unified layout default, WASM audio processor, user search
- 9mo agoSRSSRS 6.0 goes stable with H.265 across RTMP, HLS, TS and SRT ⚡
- 10mo agoSRS6.0-b3: use-after-free and HLS cleanup fixes
- 11mo agoSRS6.0-b2: configurable SRT stream IDs and a WHIP transcoding fix
- 1y agoSRS6.0-b1: RTC crash fixes, Windows binary dropped
Frequently asked questions
What is the difference between SRS and BigBlueButton?
Both compete on the same themes — webrtc — within Meetings. SRS and BigBlueButton are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is SRS better than BigBlueButton?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. SRS and BigBlueButton are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Meetings products to evaluate alongside.
What are the best alternatives to SRS?
Top SRS alternatives in Meetings are ranked by recent ship velocity. Browse the "SRS alternatives" section above for the current picks, or visit /alternatives/srs for the full list with editorial commentary on each.
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.