Provide tools for translation and display of text in multiple languages and support for regionalization/localization for dates, numbers, currency, measurement, or other local contexts.
Provides a pop message to inform the user which site version they are viewing. To enable it per locale goto admin/settings/language/locale-informer
TMGMT Client is the TMGMT plugin to submit and receive translation jobs from systems running TMGMT Server
i19n is a extension module that adds support for things like price and date format localisation. This is not just one module but a suite of modules.
This module automatically translates stored Drupal content through the use of third-party translation API's.
Integrates Entity Translation with Panels IPE. This would probably work with i18n as well, but I haven't tested.
If you want to take over this project, see Project ownership transfer.