Messenger is an open source project created by HubSpot, Inc.  It is nurtured by HubSpot devs and the community.

Messenger was originally written and is currently maintained by @zackbloom
All of the styles in Messenger were written by @adamschwartz
@bosgood is responsible for removing the Backbone dependency
The gruntfile is maintained by @BennyC

Various bugfixes by @STRML, @joelmoss and @TrevorBurnham