Forumlar / Cotonti / Localization / Transifex translation service

The idea to use common collaborate translation service sounds great. 

But a certain limitations of Transifex make me doubt in it. And it would be good to hear mentions of a Cotonti community.

Is there any other services we can use?

I checked these services:

http://weblate.org - completelly free, works with git repository. Supported formats: http://docs.weblate.org/en/latest/formats.html  (uses translate-toolkit).
(should be checked for multidimensional arrays, and array-strings)

http://crowdin.net/ - Free for open source. (Unlimited projects, unlimited strings and collaborators). Supports many formats, zip uploading (with directory structure).
Had convinient interface, can parse multidimensional arrays. Seems do not understand string arrays (but I'm not shure).