What are some alternatives?
Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.
Crowdin - Localize your product in a seamless way
Zanata - Homepage for Zanata translation software
POEditor - The translation and localization management platform that's easy to use *and* affordable!
Localize - Localize is translation software that automatically converts the content of your website or app into multiple languages.
Pootle - Multiple file formats.