Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Sketchboard.io - Visual Remote Teamwork. Solve problems and create ideas on endless whiteboard with your teammates by sketching.

Drift - A messaging app that helps you grow your business.

Limnu - Sketch, share and collaborate with your team

Talkus - Chat with your website users from Slack

Draw.Chat - Anonymous real-time whiteboard with text and video chat.