As a Developer you usually need just several things from TargetProcess:
Most if the time you are working with code in Visual Studio. It means each task that you need to do in TargetProcess requires switch to browser and loosing focus. TargetProcess Visual Studio Add-In allows you to do almost all required things right there. You will be able to:
ToDo list in Visual Studio contains all assignments. You may sort them as required and. If you need more info about the task, double click it and description will appear in new web browser window.
Time tracking is painless in the add-in. Select the task you are starting work on and push start button. Time starts ticking. Need to switch to another task? No problem, just stop timer, select another task and push start again. Need to post all time records into the server in the end of the workday? Push Submit Time button. It can't be easier.
Also you may see all spent time in a nice report that shows time fragmentation.