Systems, methods, and software are disclosed herein in which a collaboration service registers users as participants in a collaboration session. As session content is received from at least one instance of various instances of a collaboration application engaged by the users, the collaboration service shares the session content with at least one other instance of the collaboration application. In addition, the collaboration service shares session information descriptive of at least a portion of the session content with at least one social network application associated with at least one user registered as one of the participants.