I am currently searching for a reference management software to be used collaboratively in our research group. Unfortunately, the bigger proprietary software systems (like EndNote and Citavi) don't support synchronisation between different clients. We'd like to use a system which is network based (as in Client-Server or easy synchronisation) and integrates well with MS Word/OpenOffice.org.
So, what kind of software do you use to do your reference management?
P.s. I asked the same question on stackoverflow.com at http://stackoverflow.com/questions/3656744/what-centralised-reference-management-software-should-we-use (just in case you stumpled over the question there as well)