FlashGot is the free add-on for Firefox and Thunderbird, meant to handle single and massive ("all" and "selection") downloads with several external Download Managers.
Supported Download Managers for Mac OS X (Folx, iGetter, JDownloader Leech, Progressive Downloader, Speed Download and wxDFast*)
* wxDownload Fast for Mac OS X is currently available in source form only
FlashGot turns every supported download manager into a download manager for Firefox!
FlashGot offers also a Build Gallery functionality which helps to synthetize full media galleries in one page, from serial contents originally scattered on several pages, for easy and fast "download all".
Subscribe for our newsletter with best Mac offers from MacUpdate.