One week ago, I programmed a simple PHP/MySQL application that logs my daily tasks. After finishing something (writing a blog post, programming a stylesheet, designing a mockup, etc.) I add it to the log, and it tracks the total time, whether it is billable, the related project, the expense for me, and whether or not it requires travel. I now have three weeks of tasks logged in to the work log, and it is a great way to look at how I have been spending my time during these initial few weeks of starting-up, as well as how I’ve been spending and making money.
I know there are tools out there that do this for you, probably have a slick “Web 2.0” interface, and only cost $15.99/month to use. What tools do you find useful for task/time tracking, whether you’re independent or not?