Whatshelp Widget - Chat with website visitors via popular messaging apps
Krugle - Krugle is the complete enterprise solution for search targeted to the development organization.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
OpenGrok - OpenGrok is a fast and usable source code search and cross reference engine.
Github Widget - An embeddable widget for all your GitHub stats and projects
searchcode - A source code search engine