Metatask

Very straightforward to set up "Templates" for processes. Very easy to set up users and groups (allowing processes to be quickly updated when staff changes). Actually creating processes takes some time, but mainly because of how much automation can be built into the system. The pricing is very straightforward and very fair for the features provided.

The website interface is great and very well executed, however, I wish there was a mobile app, just so that I could set up notifications on the tablets we have distributed to our manufacturing staff.
There is not currently the ability to display some fields while hiding others based on a previous answer within the same task step, but I believe this is a feature that is being worked, and it is pretty easy to get around.

I was looking for a way to systematize our HR and IT-related processes like onboarding people, terminations, leave requests, clients setup etc. Metatask has light and clean user interface and it was easy to setup all my workflows; inside the app they look like a list of steps that needs to be done.
Setting due dates: I like the flexibility to use business or calendar days and to have customized holidays schedule.
Available tasks inbox: I like to assign tasks to departments instead of specific employees, we have more than one person who can handle HR and IT related tasks and this was very handy.
Chat tool: I like that comments when added appear instantly, like in Slack or Skype, we use it for a quick chat about tasks.
Zapier: using it to send emails from a process and save documents to G-drive.
Forms: I like how forms are used to collect and transfer data from task to task.

After a year of using we feel a need for more advanced features: conditions to exclude or include some tasks, some way to have request/approval workflows.
Definitely, needs at least some reports and export to CSV or Excel.