Google Translate
Free
Google Translate is a cloud based language translator developed by Google.
Tatoeba
Open Source
Tatoeba.org is a free collaborative online database of example sentences geared towards foreign language learners.
Crowdin
Commercial
Crowdin is a localization project management platform and translation tool for developers and website owners.
Compare Apertium with alternatives
Compare Google Translate and Apertium and decide which is most suitable for you.