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    * [terrastruct.com](https://terrastruct.com/) — Online diagram maker specifically for software architecture. Free tier up to 4 layers per diagram.
    * [todoist.com](https://todoist.com/) — Collaborative and individual task management. Free, Premium and Team plans are available. Discounts provided for eligible users.
    * [trello.com](https://trello.com/) — Board-based project management. Unlimited Personal Boards, 10 Team Boards.
+   * [Tweek](https://tweek.so/) — Simple Weekly To-Do Calendar & Task Management.
    * [ubertesters.com](https://ubertesters.com/) — Test platform, integration and crowdtesters, 2 projects, 5 members
    * [vivifyscrum.com](https://www.vivifyscrum.com/) — Free tool for Agile project management. Scrum Compatible
    * [YouTrack](https://www.jetbrains.com/youtrack/buy/#edition=incloud) — Free hosted YouTrack (InCloud) for FOSS projects, private projects (free for 3 users). Includes time tracking and agile boards