Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
UI Movement - The best UI design inspiration, daily
Crisp Chat - Multi-channel customer support software
UI Garage - Specific mobile and web design patterns for your inspiration
Pepperfilters - Pepper's Snapchat Geofilter creator allows you to easily create a custom snapchat geofilter for your birthday, wedding or event.
UI8 - Carefully crafted UI design assets