OmegaT® is a free translation memory application written in Java.
It is a tool intended for professional translators.

OmegaT® has the following features:

* Fuzzy matching
* Match propagation
* Simultaneous processing of multiple-file projects
* Simultaneous use of multiple translation memories
* User glossaries with recognition of inflected forms
* Unicode (UTF-8) support: can be used with non-Latin alphabets
* Support for right-to-left languages
* Integral spelling checker
* Compatible with other translation memory applications (TMX)
* Interface to Google Translate

Document file formats include:
* XHTML and HTML
* Microsoft Office XML
* OpenOffice.org/StarOffice
* XLIFF (Okapi)
* MediaWiki (Wikipedia)
* Plain tex