TaskCoach
Flexible to-do manager featuring hierarchical tasks
Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists. It is designed for composite tasks, and also offers effort tracking, categories, notes and more.
There is no official package available for openSUSE Leap 15.5Distributions
openSUSE Tumbleweed
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.