Waterbus is a modern open-source video conferencing platform built with Flutter, Rust, and WebRTC (via str0m).
It powers virtual meetings, webinars, live streaming, and real-time collaboration — delivering smooth audio/video, screen sharing, interactive chat, and more.

Whether you run it for your team, organization, or integrate it into your own product, Waterbus is designed for:

• 🟢 Cross-platform — Web, Desktop, and Mobile.
• ⚡ Ultra-low latency — Rust-powered SFU built on str0m’s sans-IO design.
• 🌍 Scalable architecture — From 1-on-1 calls to large events.
• 💡 Developer-friendly — APIs, SDKs, and modular design.

• High-quality Audio/Video — Powered by WebRTC via str0m
• Adaptive Stream & Dynacast —
  • Dynamically pause unused video layers to cut bandwidth and save device power
  • Automatically adjust video quality based on view size and visibility
• Hybrid Topology — Start peer-to-peer for 1-on-1 calls, seamlessly switch to SFU for group calls
• Live Streaming (HLS / LL-HLS) — Broadcast to thousands with minimal delay
• Adaptive Bandwidth — Dynamic quality switching for smooth playback in any network condition
• Secure & Private — End-to-end encryption for calls

Waterbus uses Zulip for open-source collaboration — join the conversation, ask questions, and contribute ideas.

Join Waterbus Chat

We welcome contributions from developers, testers, and documentation writers of all experience levels.

Waterbus is licensed under the Apache 2.0 License.