Web4Groups was an EU-funded project among the Telematics Application Development Projects of the Fourth Framework Program. Its main goal was to develop an advanced, web-based groupware system. The project went on from 1995 to 1998. The software developed by the project is no longer in operation, but several new systems are based on the concepts and code of this software.
Read more about the project here: https://www.sztaki.hu/en/science/projects/web4groups (Last visited 17.4.2018)