How can I change language without using Google/Microsoft Translator and Resx files?

Question

hi i developed one intranet website in .net 4.0 framework.
now i want to change language from English to Arabic.
My question is How can i change language conversion with out using Google/Microsoft Translator and Resx files. Is there any third party tools are supported?
because my client having no Internet Connection.

note:
1. my client having no internet connection
2. i dont want using resx files.