CNRTL - CNRTL.fr is a Chrome extension developed by Nicolas BATTEUR as a tribute to the work of the CNRTL (Centre National de Ressources Textuelles et Lexicales). This extension aims to provide users with access to a wide range of linguistic resources from various research projects within a single portal.

The extension offers a simple search field and enter key validation. Users can also select their preferred resource from options such as Morphology, Lexicography, Etymology, Synonymy, Antonymy, Proxemics, and Concordance. In addition, the recent update in March 2010 allows users to customize these options through a preferences menu.

The extension has undergone several bug fixes and improvements, including focusing on the search field and updating the character set of the options screen. It also features a new logo and, based on popular demand, a right-click context menu for word selections.

Overall, CNRTL - CNRTL.fr is a valuable tool for anyone looking to explore and utilize comprehensive French language resources conveniently within their Chrome browser.