Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

Robinhood - Free stock trading service.

Froged - One click solution providing easy-to-use marketing, sales and support services to turn website visitors into happy customers.

Scout Finance - Free finance app that's like having a Bloomberg in your pocket. Download:

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

Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues