File a task with your local no_human and check on it: task_add and task_status over stdio.
Free
One server, in productivity & workflow. File a task with your local no_human and check on it: task_add and task_status over stdio.
Productivity & Workflow
File a task with your local no_human and check on it: task_add and task_status over stdio.
The rest either hold an API key issued by the publisher or ask for nothing.
Listed without a verification tick. Read the listing before installing.