Skype when 1:1 chat/voice is needed Campfire (and many rooms for different chat subjects) + hubot for all group-based chats Google Docs for collaborative spec e

Skype when 1:1 chat/voice is needed Campfire (and many rooms for different chat subjects) + hubot for all group-based chats Google Docs for collaborative spec editing Github for technical discussion (pull requests/issues) Pivotal tracker for day-to-day "what is s/he working on?"