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Comparison · Meetings
BigBlueButton vs Fourwaves
A side-by-side editorial comparison of BigBlueButton and Fourwaves — release velocity, themes, recent moves, and the top alternatives to consider.
BigBlueButton vs Fourwaves: at a glance
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.
What is Fourwaves?
Fourwaves replaces per-event pricing with an annual submission model and lets organizers connect custom domains to event websites.
Fourwaves is shipping daily in September 2026, with two substantive changes among the UX polish: a full pricing model restructure (September 17) and custom domain support for event websites (September 11). The pricing change removes per-event limits and add-ons, replacing them with a yearly submission cap and unlimited events. This shifts how recurring event organizers budget for the product — variable per-event costs become a single annual line item.
BigBlueButton vs Fourwaves: editorial side-by-side
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.
Fourwaves
6.3MEETINGS
Fourwaves replaces per-event pricing with an annual submission model and lets organizers connect custom domains to event websites.
◆ Current state
Fourwaves is shipping daily in September 2026, with two substantive changes among the UX polish: a full pricing model restructure (September 17) and custom domain support for event websites (September 11). The pricing change removes per-event limits and add-ons, replacing them with a yearly submission cap and unlimited events. This shifts how recurring event organizers budget for the product — variable per-event costs become a single annual line item.
◆ Where it's heading
The combination of custom domains, the account restructure, and the new pricing model points toward Fourwaves targeting organizations that run events repeatedly throughout the year — academic departments, conference series, professional associations. Unlimited events with a submission cap maps precisely onto that use case: many events, bounded total submissions. The preview parity between organizer and attendee views and the login gate added to registration forms (September 8) are both moves toward a more controlled, enterprise-ready submission workflow.
◆ Prediction
Custom domain support for event websites will likely be paired with branded email sender configuration — organizations running events under their own domain will want outbound emails to match. That is the logical completion of the white-label offering.
Alternatives to BigBlueButton and Fourwaves
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 Fourwaves.
Restream
Restream deepening X integration and adding Slack as a live streaming destination
JW Player
JW Player expands ad analytics and vertical video while hardening mobile SDKs
Element Call
Element Call drops MatrixRTC legacy mode entirely, betting the entire call stack on the multi-SFU protocol.
Nextcloud Talk Desktop
Nextcloud Talk Desktop 2.3.2 ships Talk v25 stable with E2EE call audio fix
Nextcloud Talk
Nextcloud Talk v25 adds classified conversations and an owner role, targeting regulated enterprise deployments.
See all BigBlueButton alternatives → · See all Fourwaves alternatives →
Recent activity from BigBlueButton and Fourwaves
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7d agoFourwavesAccount page reorganized into Profile and Password tabs
- 9d agoFourwavesNew pricing: annual submission limit replaces per-event fees ⚡
- 10d agoFourwavesDomain configuration page restyled to match settings UI
- 11d agoFourwavesOrganizer preview now matches attendee-facing event website
- 13d agoFourwavesReview assignment confirmation now respects reviewer workload cap
- 14d agoBigBlueButtonBigBlueButton 4.0-rc.3: LiveKit resilience hardening, configurable whiteboard zoom
- 15d agoFourwavesOrganizers can now connect a custom domain to their event website
- 15d agoBigBlueButtonBigBlueButton 4.0-rc.2: security fixes — update immediately
- 24d 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
- 2mo agoBigBlueButtonBigBlueButton 4.0-beta.4: LiveKit default (SIP.js removed), BlockNote default, Java 21 ⚡
- 4mo agoBigBlueButtonBigBlueButton 4.0-beta.3: Unified layout default, WASM audio processor, user search
Frequently asked questions
What is the difference between BigBlueButton and Fourwaves?
They serve adjacent needs but don't currently overlap on shipped themes. BigBlueButton and Fourwaves 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 BigBlueButton better than Fourwaves?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. BigBlueButton and Fourwaves 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 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 Fourwaves?
Top Fourwaves alternatives in Meetings are ranked by recent ship velocity. Browse the "Fourwaves alternatives" section above for the current picks, or visit /alternatives/fourwaves for the full list with editorial commentary on each.