Are there free task management trackers similar to Redmine?

Question

Project management

Friends! Please tell me a convenient FREE tracker for tracking project tasks like redmine.
What is searched for:
1. Adding tasks.
2. Changing the priority of a task for its execution.
3. Commenting on the task.
4. Setting and editing the timing of the task.
5. Differentiation of access rights for monitoring and editing tasks.
6. The interface should be as convenient as possible, and the user should not get lost in it.
7. Bug tracker.
Thank you!

Answer 1

From fashionable - Taiga .

Answer 2

We use trackingtime for free, cross-platform, convenient, everything you want is there

Answer 3

in some LJ I saw about https://www.hostedredmine.com/
From the description there are some nuances "Be aware that this service does not provide administrator access to Redmine, so you won't be able to create a custom configuration." And so they promise a full-fledged Redmine.