Open source
Vexa
Open-source meeting transcription API with auto-join bots for Meet, Teams and Zoom, plus an MCP server.
Open-source alternatives to Fireflies.ai
Fireflies.ai is a AI notetaker that records, transcribes and searches meetings. If you would rather own the software, keep data on your own server or avoid per-seat pricing, these open-source tools tackle the same problem: run better meetings. Meetings are where decisions happen and then get forgotten. Capture them automatically and turn them into actions.
Closest matches 4
Open source
Whisper
OpenAI's open speech-recognition model: transcribe calls, meetings and videos.
Open source
WhisperX
Whisper with word-level timestamps and speaker diarization; great for captions.
Open source
whisper.cpp
Fast C/C++ port of Whisper that runs transcription locally on a laptop.
Also open source in Run better meetings 2
Open source
Cal.com (open source)
Open scheduling infrastructure: booking pages, round-robin and routing you can self-host.
Open source
Jitsi Meet
Open-source video conferencing you can self-host or embed.
Hosted vs open source: what changes
Open source swaps a subscription for setup time. Fireflies.ai is hosted, supported and updated for you; with the tools below you (or someone you hire) install, update, back up and secure them. 4 of the 6 with a setup rating here need a developer. Most can also be bought as a hosted cloud plan from the same maintainers, which is a good middle path. Check each licence before you build on it.