aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink, etc.
License: Open Source
Axel tries to accelerate HTTP/FTP downloading process by using multiple connections for one file. It can use multiple mirrors for a download. Axel has no dependencies and is lightweight, so it might be useful as a wget clone on byte-critical systems. Developed by http://wilmer.gaa.st/main.php/axel.html
License: Open Source
Aria2 is a powerful, feature-rich download manager that supports various protocols and offers extensive configuration options, making it suitable for advanced users and scripting. In contrast, Axel is a lightweight and simpler tool that focuses on speed and ease of use, making it ideal for users who need quick downloads without complex settings.