aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink. aria2 can be manipulated via built-in JSON-RPC and XML-RPC interfaces.

Download

Download version 1.35.0. There you can download source distribution and binaries for OS X, Windows and Android.

The legacy releases earlier than 1.19.1 are available here.

Features

Multi-Connection Download . aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. Really speeds up your download experience.

Lightweight . aria2 doesn’t require much memory and CPU time. When disk cache is off, the physical memory usage is typically 4MiB (normal HTTP/FTP downloads) to 9MiB (BitTorrent downloads). CPU usage in BitTorrent with download speed of 2.8MiB/sec is around 6%.

Fully Featured BitTorrent Client . All features you want in BitTorrent client are available: DHT, PEX, Encryption, Magnet URI, Web-Seeding, Selective Downloads, Local Peer Discovery and UDP tracker.

Metalink Enabled . aria2 supports The Metalink Download Description Format (aka Metalink v4), Metalink version 3 and Metalink/HTTP. Metalink offers the file verification, HTTP/FTP/SFTP/BitTorrent integration and the various configurations for language, location, OS, etc.

Remote Control. aria2 supports RPC interface to control the aria2 process. The supported interfaces are JSON-RPC (over HTTP and WebSocket) and XML-RPC.

Usage Examples

Command-line scares you off? No, aria2 is really easy to use!!

Download from WEB:

1 $ aria2c http://example.org/mylinux.iso

Download from 2 sources:

1 $ aria2c http://a/f.iso ftp://b/f.iso

Download using 2 connections per host:

1 $ aria2c -x2 http://a/f.iso

BitTorrent:

1 $ aria2c http://example.org/mylinux.torrent

BitTorrent Magnet URI:

1 $ aria2c 'magnet:?xt=urn:btih:248D0A1CD08284299DE78D5C1ED359BB46717D8C'

Metalink:

1 $ aria2c http://example.org/mylinux.metalink

Download URIs found in text file:

1 $ aria2c -i uris.txt

Related Projects

apt-metalink : Faster package downloads for Debian/Ubuntu

: Faster package downloads for Debian/Ubuntu powerpill : Pacman wrapper for parallel and segmented downloads.

: Pacman wrapper for parallel and segmented downloads. python3-aria2jsonrpc : A wrapper class around Aria2’s JSON RPC interface.

: A wrapper class around Aria2’s JSON RPC interface. aria2.js: JavaScript (browsers and Node.js) library and cli for aria2 RPC

UI Frontends

webui-aria2 : Web browser interface for aria2 (2012 GSOC project)

: Web browser interface for aria2 (2012 GSOC project) uGet: the Linux Download Manager

License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.