YouTube - Our mission is to give everyone a voice and show them the world.
Ant Media Server - Scalable, Ultra Low Latency & Adaptive WebRTC Streaming Ant Media Server provides Scalable Ultra-low latency (0.5 seconds) Adaptive Live Streaming with WebRTC. It supports RTMP, RTSP, Zixi, WebRTC, Adaptive Bitrate, HLS and MP4 recording.
Vimeo - Vimeo is a social media app that lets you share and capture videos. You can watch new videos in a variety of different categories, and you can share your own content right from your device. Read more about Vimeo.
Red5 - Red5 is an open source Flash media server for live streaming solutions of all kinds.
MistServer - MistServer is a lightweight, open-source multistandard multimedia server.
Nimble Streamer - Light-weight media server that is freemium, pay for control panel if you need it.