Translation support will be available on next phpipam release, code is being redone and final checks ongoing. I have decided to go with gettext, it seems to be the most suitable for phpipam.
Translating is straight-forward, by providing translations for strings, for example:
#: functions/functions-mail.php:176 msgid “your domain username” msgstr “translated text”
If anyone is interested in providing translation, please contact me on email. I have already received some requests in the past, I will try to dig up old emails…