cove is a self-hosted torrent browser that bundles a BitTorrent client, DHT indexer, and a web UI on your device. It provides additional functionality like automatic transcoding of resources for browsers and Chromecast. cove requires no external servers. The search capabilities, streaming, transcoding and other features are operated entirely on your device.

I made this by cannibalizing various torrent components I had built for various separate projects. Some components are open source some are not, but the big ones you can find on my GitHub profile https://github.com/anacrolix