aria2c

aria2 is a lightweight, multi-protocol, and multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent, and Metalink protocols. Its primary advantage lies in its ability to download a file from multiple sources or servers simultaneously, significantly increasing download speed. aria2 can also resume interrupted downloads.

The command-line interface allows for extensive control over download processes. Users can specify download directories, set connection limits, configure retry mechanisms, and manage download queues. aria2 also supports BitTorrent downloads, including magnet links and the BitTorrent DHT network. Metalink support enables downloading files from multiple URLs, checking for integrity, and resuming downloads.

aria2 is known for its efficiency and low resource usage, making it suitable for servers and systems with limited resources. It can be used to download single files, multiple files at once, or entire directories. Its flexibility makes it a popular choice for system administrators and power users who need a robust and customizable download manager. aria2 can also be controlled remotely through its RPC interface, allowing for integration with other applications and services.