MeisterTask

Provides two free productivity tools. Toggl Track for time management and tracking app with a free plan provides seamless time tracking and reporting designed with freelancers in mind. It has unlimited tracking records, projects, clients, tags, reporting, and more. And Toggl Plan for task planning w

An online diagram tool with collaboration features. Free plan with three editable documents, 100 professional templates, and basic collaboration features.

To-do lists, milestone management, forum-like messaging, file sharing, and time tracking. Up to 3 projects, 20 users, and 1GB of storage space.

The only project management solution inside GitHub. Free for public repos, OSS, and nonprofit organizations

Simple Weekly To-Do Calendar & Task Management.

Project management & Team Chat. Free for five users and two projects. Premium plans are available.

Online Planning Poker (consensus-based estimation tool). Free for unlimited users, teams, sessions, rounds, and votes. You don't need to register.

Free online scrum tool with kanban board