In just three weeks, DownThemAll! version 2 has moved from supporting just one language in beta 4, to 14 languages in beta 5. Well, kind of -- the Japanese option is "English," and American English is much the same thing. But still, the addition of any new languages is sure to please its millions of users.
If you currently use Firefox 3.6 and DTA 1.1, version 2 represents a massive and awesome overhaul to Firefox's best download manager. Speed limits (global, per server, and per download) are implemented; private browsing is supported; HTML5 video and audio tags are supported; the UI is cleaner, faster, ... and the list goes on. For more details, Lee covered most of the significant changes of DTA 2.0 back in May.
Download DownThemAll! 2.0 beta 5 for Firefox 3.5 to 4.0