Wirestorm

I work for a couple of companies whose employees are distributed across timezones and countries and someone needs to write a bit of software to make this easier. Something like BoxCloud combined with Subversion. The idea being that all shared files exist on each individual machine and are synchronized when people come online. All previous versions of the documents are stored as well. A new file can be shared with everyone just by placing into a special folder on ones computer, which is monitored by the client.

Then, you need a Push-to-talk voip system. Often you dont need to have a full conversation with someone, but instead let them know what your doing, or that you have just updated a document, etc. A special key on the keyboard (maybe caps lock? put it to some good use) will enable you to say a few words to a person or to the whole team.