aria2 is a download utility with resuming and segmented downloading. Supported protocols are HTTP/HTTPS/FTP/BitTorrent. It also supports Metalink version 3.0. Currently it has following features: - HTTP/HTTPS GET support - HTTP Proxy support - HTTP BASIC authentication support - HTTP Proxy authentication support - FTP support - FTP through HTTP proxy - Segmented download - Cookie support - It can run as a daemon process. - BitTorrent protocol support with fast extension. - Selective download in multi-file torrent - Metalink version 3.0 support. - Limiting download/upload speed