Purchase a licence
A Translation Manager licence allows you to translate multiple languages across your site. Unlicensed installs are limited to one target language.
Licences are per domain, but work for all sub-domains of your site (so an example.com licence will work on de.example.com, en.example.com, etc).
If your site uses different top-level domains for each site (like example.com, example.de), contact us and we can product a licence that will work for all your domains.
Currently all licences work for the current major version of the software, so a licence will work for all 1.x/2.x releases.