bitrix24.com

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.

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

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

Issue tracker with a streamlined interface. Free for unlimited members, up to 10MB file upload size, 250 issues (excluding Archive)

Advanced software development project management tool used in many corporate environments. Free plan for up to 10 users.

interactive diagrams that allow users to see their infrastructure from multiple perspectives and levels of detail. Charts can be expressed in code. The free tier has unlimited private diagrams with up to 3 viewers.

Project management platform. The free plan offers unlimited users, projects & boards with 100 MB of Storage.