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Comparison · Meetings
BigBlueButton vs FusionPBX
A side-by-side editorial comparison of BigBlueButton and FusionPBX — release velocity, themes, recent moves, and the top alternatives to consider.
BigBlueButton vs FusionPBX: 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 FusionPBX?
The release feed stops in 2018, so nothing here describes the current product
Every visible entry predates 2019. The newest is 4.4.1, a minor bug-fix release covering call centre login, device password propagation and call detail record naming. Below it sit 4.4.0 with user change logs, call recording management, QR-code provisioning and added translations, and two 4.2.x releases focused on bug fixes and SQL injection hardening in LUA scripts.
BigBlueButton vs FusionPBX: 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.
FusionPBX
0.0MEETINGS
The release feed stops in 2018, so nothing here describes the current product
◆ Current state
Every visible entry predates 2019. The newest is 4.4.1, a minor bug-fix release covering call centre login, device password propagation and call detail record naming. Below it sit 4.4.0 with user change logs, call recording management, QR-code provisioning and added translations, and two 4.2.x releases focused on bug fixes and SQL injection hardening in LUA scripts.
◆ Where it's heading
What the archive shows is a project that treated security hardening as release-worthy in its own right and steadily broadened administrative tooling around FreeSWITCH. What it cannot show is anything about the last several years — the feed has been silent since 2018, so no current direction is observable.
◆ Prediction
There is not enough recent data to predict a next move. Until this feed carries releases again, the product's current state is unreadable from here.
Alternatives to BigBlueButton and FusionPBX
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 FusionPBX.
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 BigBlueButton alternatives → · See all FusionPBX alternatives →
Recent activity from BigBlueButton and FusionPBX
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 5d 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 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
- 8y agoFusionPBXFusionPBX 4.4.1: call centre, device and CDR fixes
- 8y agoFusionPBXFusionPBX 4.4: recordings management, QR provisioning, email templates
- 9y agoFusionPBXFusionPBX 4.2.2: default settings and SIP alias fixes
- 9y agoFusionPBXFusionPBX 4.2.1 hardens every database-touching LUA script
Frequently asked questions
What is the difference between BigBlueButton and FusionPBX?
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 FusionPBX?
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 FusionPBX?
Top FusionPBX alternatives in Meetings are ranked by recent ship velocity. Browse the "FusionPBX alternatives" section above for the current picks, or visit /alternatives/fusionpbx for the full list with editorial commentary on each.