Fourwaves
Fourwaves is closing the gaps around its payments layer and its form editor at the same time.
Comparison · Meetings
BigBlueButton vs CasparCG Server
A side-by-side editorial comparison of BigBlueButton and CasparCG Server — release velocity, themes, recent moves, and the top alternatives to consider.
BigBlueButton vs CasparCG Server: at a glance
What is BigBlueButton?
BigBlueButton is polishing the 4.0 beta it already committed to LiveKit, while 3.0 stays the production line.
The 4.0 beta series is in its fifth iteration and the hard architectural decisions are behind it — LiveKit became the default media stack in beta.4 with the legacy SIP.js bridge deleted, BlockNote became the default shared notes engine, and the JVM moved to Java 21. Beta.5 is consolidation: a mobile layout overhaul with paginated webcams and landscape side-by-side camera and presentation, automatic light/dark switching, a dedicated Audio settings tab with push-to-talk, and better BBB-to-LiveKit state reconciliation on reconnect. Packaging gained a bbbctl admin tool and a bbb-coturn package, with bbb-etherpad and bbb-pads now optional. The project still recommends 3.0.x for production.
What is CasparCG Server?
Broadcast playout server reaches for HDR and sets a hardware floor to get there
CasparCG Server ships stable releases roughly once or twice a year, with long RC and beta runs ahead of each major. The 2.4 line delivered resolution and control-surface breadth — 8K and 4K DCI frames, custom resolutions, an interlaced mixer pipeline for field accuracy, AMCP command batching. The current 2.5.0 stable turns to colour and deployment: initial HDR support, ffmpeg 7.0, headless Linux operation, and Ubuntu deb packaging.
BigBlueButton vs CasparCG Server: editorial side-by-side
BigBlueButton
6.3MEETINGS
BigBlueButton is polishing the 4.0 beta it already committed to LiveKit, while 3.0 stays the production line.
◆ Current state
The 4.0 beta series is in its fifth iteration and the hard architectural decisions are behind it — LiveKit became the default media stack in beta.4 with the legacy SIP.js bridge deleted, BlockNote became the default shared notes engine, and the JVM moved to Java 21. Beta.5 is consolidation: a mobile layout overhaul with paginated webcams and landscape side-by-side camera and presentation, automatic light/dark switching, a dedicated Audio settings tab with push-to-talk, and better BBB-to-LiveKit state reconciliation on reconnect. Packaging gained a bbbctl admin tool and a bbb-coturn package, with bbb-etherpad and bbb-pads now optional. The project still recommends 3.0.x for production.
◆ Where it's heading
The 4.0 line is converging toward a release candidate, and the work has shifted from replacing subsystems to making the new ones survive real conditions — reconnects, phones, and administrator tooling. Making etherpad and pads optional alongside a security advisory that urges API secret rotation points at shrinking the default install's attack surface. The parallel 3.0.x train continues shipping security patches, so the ecosystem is carrying two branches until 4.0 stabilises.
◆ Prediction
Expect beta.6 or a release candidate to focus on the LiveKit reconnection and mobile paths that beta.5 only started, since those are the areas where a self-hosted media migration typically breaks. The optional-package work suggests a slimmer default deployment is being prepared for the 4.0 release.
CasparCG Server
0.0MEETINGS
Broadcast playout server reaches for HDR and sets a hardware floor to get there
◆ Current state
CasparCG Server ships stable releases roughly once or twice a year, with long RC and beta runs ahead of each major. The 2.4 line delivered resolution and control-surface breadth — 8K and 4K DCI frames, custom resolutions, an interlaced mixer pipeline for field accuracy, AMCP command batching. The current 2.5.0 stable turns to colour and deployment: initial HDR support, ffmpeg 7.0, headless Linux operation, and Ubuntu deb packaging.
◆ Where it's heading
The project is modernizing the parts of a playout server that determine whether it can sit in a current broadcast chain — colour pipeline, pixel format fidelity, and where it can run. That comes with an explicit hardware bargain: AVX2 is recommended now and becomes a requirement in 2.6, trading compatibility with pre-2013 CPUs for the instruction set HDR and the embedded Chrome renderer need. Alongside, Decklink and NDI integration keep absorbing steady fix work.
◆ Prediction
2.6 should complete the AVX2 transition and widen HDR beyond the current subset of producers and consumers, since the 2.5 notes describe HDR as deliberately partial.
Alternatives to BigBlueButton and CasparCG Server
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 CasparCG Server.
HOMER
Homer's storage churn pauses long enough to ship a catalog backup CLI.
mediasoup
mediasoup has moved off data-channel plumbing and into the media path — timing first, now layer selection.
Wowza
Wowza keeps arguing its case for detection inside the streaming pipeline
Vimeo
Vimeo ships another batched product post: six changes to embeds and the player
Switcher Studio
Switcher Studio's feed is a livestreaming how-to blog, not a changelog
See all BigBlueButton alternatives → · See all CasparCG Server alternatives →
Recent activity from BigBlueButton and CasparCG Server
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 5d agoBigBlueButton4.0 beta.5: mobile layout overhaul, audio settings, bbbctl admin tool
- 26d agoBigBlueButton4.0 beta.4: LiveKit becomes the default media stack, SIP.js bridge removed ⚡
- 2mo agoBigBlueButton4.0 beta.3: layout system rebuilt, Unified layout becomes default
- 5mo agoBigBlueButton3.0.23: breakout-room fixes, security patches, renamed bbb-web properties
- 6mo agoBigBlueButton3.0.22: client and core fixes, security patches
- 6mo agoBigBlueButton3.0.21: security fixes and minor client improvements
- 8mo agoCasparCG Server2.5.0 brings initial HDR, headless Linux and an AVX2 baseline ⚡
- 1y agoCasparCG Server2.4.3 clears crashes across FFmpeg, Decklink and HTML producers
- 1y agoCasparCG Server2.4.2 restores Decklink driver 14.3 compatibility
- 1y agoCasparCG Server2.4.1 fixes Decklink subregions, EXIF rotation and NDI source listing
- 2y agoCasparCG Server2.4.0 adds 8K and 4K DCI frames plus AMCP command batching
- 2y agoCasparCG Server2.4.0 RC1 preview of the 2.4 feature set
Frequently asked questions
What is the difference between BigBlueButton and CasparCG Server?
They serve adjacent needs but don't currently overlap on shipped themes. BigBlueButton is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 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 CasparCG Server?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. BigBlueButton is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 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 CasparCG Server?
Top CasparCG Server alternatives in Meetings are ranked by recent ship velocity. Browse the "CasparCG Server alternatives" section above for the current picks, or visit /alternatives/casparcg-server for the full list with editorial commentary on each.