PyroScope is a collection of tools for the BitTorrent protocol and especially the rTorrent client. "pyrocore" is the component providing command line tools for automation of common tasks, like metafile creation, and controlling rTorrent via its XML-RPC interface. It also offers a documented API, with which these tools are implemented.
PHPTracker is a PHP library to generate .torrent files, set up a Bittorrent tracker server, and a seed server too. It is capable of creating standard .torrent files from any file on your server, tracking client peers and managing peer announcements, and initially seeding your file with a peer daemon that automatically shuts down once you have enough external seeders.
pytvshows downloads torrents for TV shows from RSS feeds provided by ezrss.it (previously tvRSS.net). It is designed to be run from cron or a shell and interfaces with BitTorrent clients like Transmission (via the Transmission RPC API) or any other BitTorrent client that supports folder monitoring (most). This is a resurrection of the venerable pytvshows script by Ben Firshman.
Btpd is a utility for sharing files over the BitTorrent network protocol. It runs in daemon mode, thus needing no controlling terminal or GUI. Instead, the daemon is controlled by the btcli command line utility or other programs capable of sending commands and queries on the btpd control socket.