Teamweek - A project management software to help you get the best overview. Plan fast, change plans faster!

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

teamcheck - Daily planner for creative teams

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

SlimPlanner - Team scheduling, resource planning, task management

HelpScout - Help Scout is a simple, straightforward way to provide excellent support