Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.
HarmonyPSA - HarmonyPSA - Professional Services Automation (PSA) for IT Businesses
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.
Wrike - Wrike is a flexible, scalable, and easy-to-use collaborative work management software that helps high-performance teams organize and accomplish their work. Try it now.
Slack - A messaging app for teams who see through the Earth!
monday.com - The most intuitive platform to manage projects and teamwork