For task managers in the sense of OS tasks/processes. Use 'project-management' if you mean that.
The term "task manager" is a little ambiguous, and could mean different things. This tag here is meant for managing OS tasks and processes, like
- list up what's running
- what application/processes hogs CPU/memory etc.
- possibly kill processes gone havoc
If that's not what you had in mind, please rather take a look at...