Open Source BSD BitTorrent Clients

An advanced and multi-platform BitTorrent client with a nice Qt user interface as well as a Web UI for remote control and an integrated search engine. qBittorrent aims to meet the needs of most users while using as little CPU and memory as possible.

Vuze (formerly Azureus) is an extremely powerful and configurable BitTorrent client. Search and download torrent files. Play, convert and transcode videos and music for playing on many devices such as PSP, TiVo, XBox, PS3, iTunes (iPhone, iPod, Apple TV).

aria2 is a multi-protocol & multi-source, cross platform download utility. The supported protocols are HTTP(S), FTP, BitTorrent, Metalink. It can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth.

trackerslist is a repository that provides continuously updated lists of public BitTorrent trackers, designed to improve torrent download performance and peer discovery. The project is maintained by an automated system that regularly checks tracker availability, removes duplicates, and ranks them based on reliability and latency. It offers multiple formats of tracker lists, including HTTP, HTTPS, WebSocket, and IP-based versions, making it compatible with a wide range of BitTorrent clients. The lists can be integrated into torrent files or magnet links to enhance connectivity and download speeds. Additionally, the project includes specialized lists for alternative networks such as I2P and Yggdrasil, expanding its usability in privacy-focused environments. By maintaining clean, validated, and optimized tracker collections, trackerslist acts as a foundational resource for improving BitTorrent efficiency.

peerflix is a Node.js-based streaming torrent client that lets you stream video or audio files directly from a torrent (magnet link or .torrent file), without needing to wait for the entire download to finish. It spins up a small HTTP server that serves the torrent’s content as it’s downloaded; for example, if you point a media player (like VLC or MPV) to the provided URL, it will start playing almost immediately. Peerflix automatically selects the largest file in a multi-file torrent by default (or can list all files for manual selection), and supports passing arbitrary flags to the media player — letting you stream with subtitles, full-screen mode, or other player-specific options. Because it's built on the torrent peer network, it downloads pieces on demand as playback proceeds, which can be more efficient if you only want to watch a single file. Peerflix also exposes programmatic API usage using underlying low-level torrent-streaming logic.

TrackersListCollection is a daily-updated collection of BitTorrent tracker server lists, curated and filtered from across the internet to build a “best of” list and a full list for usage in torrent clients, automation, or performance tuning. The project scans public trackers, tests their responsiveness or status, categorises them (e.g., all trackers vs best trackers), and makes plain-text files available (like best.txt, all.txt) that can be included in download clients or scripts. Because trackers can go offline or degrade over time, the daily refresh schedule is crucial for maintaining a high-quality list. The repo also includes metadata and mirrors to handle international usage and multiple download sources. For people who use torrent infrastructure, ensure peers connect reliably, or want to automate external tracker lists for aria2 or other clients, this is a practical and well-maintained source.

Enhanced CTorrent is a BitTorrent client for unix-like environments. High performance with minimal system resources and dependencies is a priority.

Torrent Search is a cross-platform application, allowing to search for torrent files on different websites. Supported websites are integrated through plugins, which allows to easily extend the number of websites supported.

Command line torrent viewer and hash checker. Displays metadata and file catalog from a .torrent file. Offline verifies content hashes of downloaded files against torrent. Linux or Windows, Windows binary included.

iTorrent allows you to download BitTorrent podcasts from iTunes. It transforms BitTorrent podcasts so that you can update them just like any other podcast in iTunes.

Quazaa is a cross platform multi-network peer-to-peer (P2P) file-sharing client inspired by Shareaza which will support Gnutella2, Ares, eDonkey2000 (eMule), HTTP, FTP, and BitTorrent. Using the Qt software development kit

Feb. 7, 2019 Transmission is a respected Fast, Easy, and Free BitTorrent Client, as from their site https://transmissionbt.com/about Unofficial Linux and Window builds run perfect either service or daemon. 32 bit and 64 bit versions. 32 (runs everywhere), 64 only 64-bit Windows. Decision made to maintain choice 2.7x core rather than somewhat buggy 2.8x-2.9x cores. That's why you will see infrequent and less bug fixes than official branches. All the features of 2.8x-2.9x (except rename). Run this solid 2.77+ port for extended days, it doesn't crash or lock. Prime for seedbox use. The included remote GUI port is fine tuned to the daemon released here. Temporary piece support. https://trac.transmissionbt.com/ticket/532 plus many featured enhancements! Tested, stable enhancements user requested. Specifically modified and bug tested for Linux GCC and Windows (cygwin gcc/g++) compilers. Current release 14734-18 020619 https://github.com/cfpp2p/transmission/releases

Extended BitTorrent Client and Tracker. High-performance software for this peer to peer file distribution protocol. A Windows client written in C++. A tracker written in C++, using MySQL as secondary storage.

Rufus - A powerful, easy to use, efficient Python based BitTorrent client. http://rufus.sourceforge.net/downloads.php

A torrent search engine plugin for the Azureus/Vuze bittorrent platform.

TBDEV,NET is a project to further enhance, update and develop a software (php peer-to-peer) from the original torrentbits/bytemonsoon source code. For further information click on the "Home Page" link above which takes you to our help forum.

Plugin for Irssi which monitors torrent IRC announce channels, downloads torrent files based on a user-defined filter, and then sends the torrent files to a local or remote torrent client. Supports several different private trackers.

DumpTorrent is a non-interactive text mode program which displays BitTorrent .torrent file information, including size, file names, announce[-list], comment, publisher and info_hash. It can also query (scrape) tracker for current downloader count.

A Web Frontend for MkTorrent. To avoid the need of user accounts and SSH access.

Plugin for ChatZilla which monitors torrent IRC announce channels, downloads torrent files based on a user-defined filter, and then sends the torrent files to a local or remote torrent client. Supports several different private trackers.

BitTorrent private tracker scripts written in PHP. This project is not actively maintained by me any more. I recommend use actively-developed forks instead.

"aria2fe" (the "fe" stands for "FrontEnd") is a graphical user interface (GUI) for the command line (CLI) based program aria2. aria2fe was designed and constructed using C++/Qt for the GNU Unix/Posix/Linux platform.

phpMyBitTorrent: BitTorrent Tracker written in PHP. Features include: hosting torrents from remote trackers, DHT, Compact Announce, alternate links (eD2K, Magnet), HTTP-Basic Authentication, Passkey Authentication, embedded HTML Editor, Mass-upload of to

RivetTracker is a modified version of PHPBTTracker. Written in PHP, this BitTorrent tracker uses MySQL as the database backend. It provides an RSS feed, optional support for HTTP seeding, detailed connection statistics, easy installation, and much more.

Complete Bittorrent tracker system or frontend only for xbtt.