Anyone knows of an OpenSource Collaborative Translation app?

Question

like the one Facebook used to localize its site?

Answer 1

I don't think that Lingumania is open source, but it does it in a very similar fashion like the one Facebook used.

Answer 2

Commercial Product:

Transifex is a modern localization workflow and crowdsourcing platform, suited for software and dynamic content translation.

They also have a Community Edition (open source) which is located at transifex.org or https://github.com/transifex/transifex/

Answer 3

Hosting for Open Source projects is usually free, but quite expensive for commercial projects on most platforms.

I have limited my answers to projects, which provide their software as Open Source.

• Pootle - Python - http://pootle.translatehouse.org/ - Hosting: NA
• ReGlot, a fork of GlotPress - PHP - https://github.com/ReGlot/ReGlot / Hosting: https://translate.foe-services.de 18 USD per year per 500 strings
• Launchpad - PHP - http://launchpad.net Hosting: https://launchpad.net/+tour/join-launchpad#commercial 250 USD per year per project
• Transifex - Python - https://github.com/transifex/transifex/ - Hosting: transifex.com 19 USD per month per 15000 words
• Zanata - Java - http://zanata.org - Hosting: NA
• Weblate - Python - http://weblate.org/ - Hosting: http://weblate.org/en/hosting/