FlashGot is a free Mozilla/Firefox/Thunderbird extension, meant to handle single and massive (all and selection) downloads with several external Download Managers. FlashGot is a Mozilla extension that handles downloads with download managers.(FlashGet, Free Download Manager, Fresh Download, GetRight, HiDownload, InstantGet, Internet Download Accelerator, LeechGet, Mass Downloader, Net Transport, NetAnts, ReGet, Star Downloader, Thunder (Chinese only popular product), TrueDownloader and Ukrainian Download Master ), WellGet)