Question: I'm looking for an open-source live streaming platform that can handle large-scale events with high availability.

Daily is a heavy-duty enterprise WebRTC foundation for building real-time voice and video apps. It can accommodate up to 100,000 simultaneous participants with less than 13ms median latency. It's got features like high-definition recording, enterprise analytics and end-to-end encryption. It's good for big events, and it comes with APIs and SDKs for the Web, iOS, Android and React Native.

Another good option is Tencent RTC, which offers a broad suite of tools for real-time communication including video call, voice call, chat and live streaming. It's available on multiple platforms and is designed for high availability and low latency, so it's good for big events. With its pay-as-you-go pricing and broad suite of SDKs, it's easy for developers to incorporate it into their apps.

Agora offers a real-time engagement foundation with high-quality voice calling, live streaming and interactive video chat. Agora's customizable SDKs for multiple platforms and features like AI Noise Suppression and 3D Spatial Audio make it a good option for increasing user engagement in social, gaming and education apps.

Last, Dyte offers a suite of SDKs for live experiences, including audio/video conferencing and live streaming. It's got auto-bandwidth switching and auto track management for high scale and reliability, and it's certified for major security standards. It's got flexible pricing and deep support, so it's good for everything from education to gaming to community events.