GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most widely-used Internet protocols. It is a non-interactive command line tool, so it may easily be called from scripts, cron jobs, terminals without X-Windows support, etc.
FDM accelerates downloads by splitting files into sections and then downloading them simultaneously.
Internet Download Manager (IDM) is a tool to increase download speeds by up to 5 times, resume and schedule downloads. Comprehensive error recovery and resume capability will restart broken or interrupted downloads due to lost connections, network problems, computer shutdowns...
aria2 is a multi-protocol & multi-source, cross platform download utility.
aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. It supports downloading a file from HTTP(S)/FTP and BitTorrent at the same time, while.
cURL is a computer software project providing a library and command-line tool for transferring data using various protocols with URL syntax: supporting FTP, FTPS, SCP, SFTP, HTTP, HTTPS, TFTP, TELNET, DICT, LDAP, LDAPS and FILE.
FlashGet is a leading download manager and has the highest amount of users on the internet. It uses MHT(Multi-server Hyper-threading Transportation) technique, supports various protocols and has excellent document management features.Discontinued
The program is no longer updated. Last version, 3.7, released on November 8th, 2012, can be downloaded from the official website.Bundleware
Be careful during the installation: https://alternativeto.net/discussions/applications/11718/be-careful-in-the-installation/
GetRight® is a download manager that simply improves and optimizes how you download files from the Internet through faster download speeds, download recovery and resuming, and better management of your downloads.Discontinued
The program seems to be no longer updated. Last version, 6.5, released in January 2011, can be still bought from the official website.
TubeMaster++ is a powerful tool which can capture multimedia files you are watching or listening from your internet browser (FLV,MP3,MP4). Captured files can be saved directly on your computer or converted to other popular video or audio formats (AVI, MPEG, MP3, MP4, IPod, PSP ..Discontinued
The project seems to be no longer maintained and the official website is no longer available. The last version, v2.7, can be still downloaded from Softpedia and the source code is available on SourceForge (v2.5).
iGetter is a full featured download manager and accelerator. It resumes broken downloads and recovers from download errors. It is excellent utility for files that you want to download at ease.
KGet is a versatile and user-friendly download manager for KDE. By default it is the download manager used for Konqueror, but can also be used with Mozilla Firefox. KGet is part of the KDE Network package and can download files from FTP, HTTP(S) and BitTorrent sources.