Screenshots can be used in order to track users allowing the employer to see who is active, for how long and on what. These can be turned off, or images can be blurred. You can also adjust frequency between 1, 2 and 3 shots per 10 minutes.
Many other time tracking apps allow for free users under a certain team size and for personal use, Hubstaff does not allow for this and only has a limited 14 day trial of the software before one needs to pay a monthly fee that starts at $5 a month for the lowest package.
You can create a task list template and quickly insert it into a new project. For example, there might be 40 tasks involved with setting up a new Wordpress site for my client. With Teamwork, you just insert the task template for the new client and are ready to go.