Owncast

Owncast is a self-hosted, open-source live video streaming server that gives creators complete control over their live streaming setup. It lets you broadcast live video directly to your audience from your own server, with a built-in web player and live chat — no YouTube, Twitch, or third-party platform required.

Owncast is designed to be as simple as possible to run. It accepts an RTMP stream from OBS, Streamlabs, or any standard broadcasting software, and immediately makes it available via HLS to viewers in a browser. The built-in chat supports emotes, moderation, and user registration. Owncast also integrates with the Fediverse (Mastodon, etc.) — followers on any ActivityPub platform can receive notifications when you go live.

With over 11,000 GitHub stars and licensed under MIT, Owncast is an excellent YouTube alternative for content creators, game streamers, event broadcasters, and communities that want to host their own live streams. It is deployable on a single Linux server and requires minimal resources.