yuuflow - Simple yet flexible project management

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.

Jira Core - A project and task management solution built for business teams. You can manage any business project in Jira Core - start your free trial!

KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.

Height - Height is a project management tool for your whole team.- Task lists to keep your team synced- Chats to keep conversations about work in one place- Lightning fast with Cmd-K, custom shortcuts, and jump to- Integrations to automatically update tasks

Meistertask - MeisterTask is an intuitive task management and collaboration tool.