Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
SmallDevTools - Handy developer tools with a delightful interface
Intercom Facebook integration - Read, manage & respond to Facebook messages from Intercom
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Profitable developer tools database - A database of 103+ hand-curated profitable developer tools