Gnome Time Tracker

The Gnome Time Tracker is a to-do list/diary/journal tool that can track the amount of time spent on projects, and, among other things, generate reports and invoices based on that time.

You could use it to keep shopping lists, organize ideas, track bug reports, keep a diary of activities, do some blogging, provide weekly status reports to management, and even as a consultant billing system. The reason it can be used for all of these things is that it supports five basic, simple features:
- Multiple To-Do Lists that can be sorted by the priority/importance of the tasks in the list. The to-do items can be organized into categories, arranged in a hierarchical way. This makes it easy to maintain both business and personal items in the list, or handle many different projects, while keeping them separate from each other.
- A pair of Diary/Journal areas that can be used to keep long and detailed notes and diary entries. The project description area allows a multi-paragraph description or status to be typed in. The diary area allows day-to-day notes to be associated with a set of timestamps, so that one has a record of what one did on any given day.
- A Running Timer, with time totals, for each project/task. One starts the timer by clicking on a task: it will measure the amount of time that you are in front of the computer. If it detects that the keyboard/mouse are idle, it will stop the clock. If the clock stays stopped too long, it will nag you to start it up again. You can view time totals by day, week, month or year.
- A Billing Status dialog for each diary entry. You can mark any given diary entry as bill-able/non-bill-able, paid or pending, and set the billing rate. Each project can also be marked up with a set of project-planning information: planed start, end and due dates, hours to finish, percent-complete. This is in addition to assigning an urgency/importance to each project, as well as a status (completed/in-progress not-started/canceled).
- A half-dozen different HTML Reports that can slice and dice your lists. There's a Journal report that shows all of the diary entries for one given project. There's an Invoice report that summarizes the time spent on each entry, and computes a dollar amount for it. There's a Status Report that prints the title of each project, together with the paragraph-long descriptions of each. There's a ToDo report, which prints only the project title, the importance/urgency, and the completed/in-progress/not-started status. The Daily report summarizes the total time spent on a day-by-day basis, and lists each of the projects that were worked on in a given day. Each of these reports can be customized. And, because they're HTML, you can even publish them as web pages.