Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
AirHelp - Get paid when you're delayed!
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Service - Customer service issues solved for you, on demand, for free.
Basecamp - A simple and elegant project management system.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.