OmegaT - OmegaT is a free open-source translation memory application for professional translators written in Java.
Wordfast - Wordfast is the fastest Translation Memory software on the market.
Crowdin - Localize your product in a seamless way
Smartcat - Smartcat
Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.
MateCat - The MateCat home page allows users to quickly create translation projects in all the language combinations and file formats supported by the platform, and to create or select translation memories and glossaries.