AltLang meets the free CAT tool MateCat 


an enterprise-level, online CAT tool designed to make post-editing and outsourcing easy and to provide a complete set of features to manage and monitor translation projects. Take a look and start using it at


a language variety converter that helps you deliver content in different varieties of the same language, e.g. from European French to Canadian French. Try it out registering at or follow us on Twitter (@AltLang_net) to stay tuned!

…now together!!!!

The good news is that you can now use AltLang inside MateCat. You will find it as one of the machine translation systems available (see Add MT Engine at home page):

Altlang will help you manage language varieties in the following languages:

                 * English: American and British English
                 * Spanish: LATAM and European Spanish
                 * French: Canadian and European French
                 * Portuguese: Brazilian and European Portuguese

Prompsit is offering AltLang inside MateCat for free for 6 months!!!


So, when choosing AltLang at MateCat, you just have enter the following credentials:

    Engine name: MateCat
    Key: 4Acu5Wr8

And AltLang will be available whenever you need it (provided that you are logged in!).

Find out how to use AltLang in MateCat in the following articles:
AltLang in MateCat

AltLang automatically replaces the existing differences between two varieties of the same language

The main phenomena covered by AltLang include vocabulary, syntax, spelling, style (i.e. punctuation, data and hour formats, etc.) as well as other socio-linguistic differences. See this example of a date format conversion between American English and British English in MateCat interface:


AltLang is fully customisable and changes with you!

We are really happy to hear from you if you find a new conversion to add to it in any of the varieties. We are also able to develop new varieties for existing languages or for new ones. If you have something like this in mind, contact Prompsit using the form below.