Easing software localization with Transifex

As far as support for left-to-right (and vice-versa) the tool serves out translation catalogs (po files) and allows you to submit it back to the proper project. In other words, you translate it offline using your own tools. One of the advantages that it has to offer is that once you submit it, if you have the proper credentials, it gets automatically applied to the source code!

There are also other advantages/features, such as having up to the minute statistical information for a project, as well as the ability of having at a glance a "picture" of who is doing what, which for project managers, is a great feature to have.

Anyhow, I'll let the Transifex developers chime in with their feature list. :)