Not really, fcl-web is, just like the other fpc packages, a collection of units implementing certain functionality. i.e. it consists of classes, types, routines, whatever generally required when creating an application. In fcl-web case, it implements common things required to build web (-related) application. For instance, building apache module, f(cgi) apps, handling messages to be used for communicating with certain frameworks (e.g. extjs), remote procedure call, building a web server, etc.