What might help is if you elaborate a little more as to what exactly you are looking for.  For example, I have built a user import and user directory module centered around our HR software (Ultipro) to allow easy transfer of users into our DNN database from HR, including detecting what department they are in, who is their manager, etc.  I branch out from that module and have all sorts of other modules that tie into that data, such as a company event calendar which includes workflow (manager approval needed for some events, for example), a project and helpdesk tracking system, sales incentive programs, etc.

None of that work I just mentioned is "available" to the public but I do run my own business on the side developing modules and doing custom work so if somebody was interested in something I've done for my day job I could always entertain the idea of making a public version of it that isn't tied specifically to our data and structure at work.