aria2
Lightweight multi-protocol download utility supporting HTTP, FTP, BitTorrent and more.
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Homebrew analytics installs: 11,506 installs (2026) to 20,928 installs (2026)
Imported from Homebrew analytics, last reading Oct 2026
About aria2
aria2 is a command-line download utility designed for efficiency and multi-protocol support. Developers use it to download files via HTTP, HTTPS, FTP, SFTP, BitTorrent and Metalink. The tool can split downloads across multiple sources and connections to maximize bandwidth utilization. It includes a complete BitTorrent client with DHT, PEX encryption, magnet URI support and web-seeding capabilities. aria2 offers remote control through JSON-RPC and XML-RPC interfaces, allowing it to be manipulated programmatically. The utility is noted for its lightweight nature, consuming minimal memory and CPU resources during operation.
aria2 is developed by aria2 and distributed under the GPL 2.0 license. The tool is written in C++ and operates entirely from the command line, though various third-party UI frontends and RPC wrappers exist for different platforms and workflows. It runs on multiple operating systems including macOS, Windows and Android.
Checked 9 November 2026.
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