taskwarrior
Command-line todo list manager
It maintains a list of tasks that you want to do, allowing you to add/remove, and otherwise manipulate them. Task has a rich list of subcommands that allow you to do sophisticated things with it. You'll find it has customizable reports, charts, GTD features, Lua extensions, device synching and more. Taskwarrior is a very active project involving people around the globe - check often for updates.
There is no official package available for openSUSE Leap 15.6Distributioner
openSUSE Tumbleweed
openSUSE Leap 15.6
openSUSE Leap 15.5
openSUSE Backports for SLE 15 SP4
SUSE SLE-15-SP1
Unsupported distributions
The following distributions are not officially supported. Use these packages at your own risk.