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.
Azure DevOps - Visual Studio dev tools & services make app development easy for any platform & language. Try our Mac & Windows code editor, IDE, or Azure DevOps for free.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Helix ALM - Helix ALM is the single, integrated application that lets you centralize and manage requirements, test cases, issues, and other development artifacts and their relationships.
Slack - A messaging app for teams who see through the Earth!
Jama Connect - The Leader in Requirements Management Solutions