GoldenDict is a feature-rich dictionary lookup program, supporting multiple dictionary formats.

Apertium is a free/open-source rule-based machine translation platform.

dict.cc is a free, multilingual online dictionary. The site's database can also be downloaded and used offline.

OmegaT is a computer-assisted translation tool written in the Java programming language.

Weblate is a free web-based translation tool with tight version control integration.

Poedit (poEdit) is a shareware and cross-platform gettext catalog (.po file) editor to aid in the process of language localization.

Ubiquity is an extension that allows for the use of dynamic commands in Firefox.

Pootle is an online translation management tool with translation interface. It is written in the Python programming language using the Django framework and is…

Kohana PHP Framework. Kohana is an elegant, open source, and object oriented HMVC framework built using PHP5, by a team of volunteers. It aims to be swift, se…

Translation.io is a translation service, especially for Ruby.