Issue & Project Tracking.
For Software Projects.
Open source with Apache license. No plans. No limits. You can install it in your own servers.
You have the complete source code in Java, based in OpenXava framework. So hiding features or adding new ones is extremely fast and easy.
Issues with title and type, no more is needed. Optionally you can use priority, project and version among many other things.
Define a period, like January 2020 or Week 32, associate the period to a worker, and you get the worker plan, where you can assign and order issues.
Manage your customers and assign a customer to an issue indicating the time expended in the issue. Useful to track customer support.