What's the best application, software or tool that can be used to track time?
Time Tracker I'm a software engineer and have been using this tool. It is free and has a good user interface. I believe it can very well be used by professional of other areas too. It does support the features that you're looking for regarding project and task tracking.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What's the best application, software or tool that can be used to track time?

### Response:
Time Tracker I'm a software engineer and have been using this tool. It is free and has a good user interface. I believe it can very well be used by professional of other areas too. It does support the features that you're looking for regarding project and task tracking.