The introductory paragraph from the 1997 paper Report on the Cologne Sanskrit Dictionary Project still provides a good summary of the goals of the project and its accompanying web site :
The Cologne Digital Sanskrit Lexicon (CDSL) project undertakes to digitize and merge the major bilingual Sanskrit dictionaries compiled in the 19th century. Its aim is to provide a basic lexical corpus to provide an easy access to all available meanings of Sanskrit words and to allow the creation of a number of computer programs that will help to analyze Sanskrit texts.
Each of these dictionaries has a suite of 4 displays. A collection of download materials is available for experienced users.