It's growing up team communication platform where you keeping all the eggs in one basket - https://slack.com/ Atlassyn doing hipChat and it suppose to do the same, but I like it way less. And a lot of developers think the same. It's possible to create a reasonable and free environment using it: bitbucket, trello, google docs, hangout. It would work perfectly fine for the small projects. The only thing that is missing there now - is free bugtracker. It's a whole lot of different integrations, including different bugtrackers but they all not free even for the small startup size projects.
Atlassyn doing hipChat and it suppose to do the same, but I like it way less. And a lot of developers think the same.
It's possible to create a reasonable and free environment using it: bitbucket, trello, google docs, hangout. It would work perfectly fine for the small projects. The only thing that is missing there now - is free bugtracker. It's a whole lot of different integrations, including different bugtrackers but they all not free even for the small startup size projects.