TimeTracker puts up a list of projects, and the number of minutes worked on each. You click on the project you want to work on, and it starts counting on that. At the end of the day, it saves the collected data in a file, and you can use a script to process the data. The project has been idle for quite a while, and has spawned a host of imitations, including implementations of the same basic idea for Windows, PalmPilot, KDE, and various other contexts.
Konsole Start is an Eclipse plugin that adds a new menu item (Konsole Start) when you right-click a project or package in Eclipse. Once you select "Open in new tab", the plugin will start a konsole session (if a konsole session does not already exist), create a new tab, rename the tab to the project name, and then cd to the resource location directory of the project or package.
gnome-find is an easy-to-use, but powerful, graphical version of the GNU find utility. It features a default, no-nonsense dialog for use in most commonly specified searches. Additionally, a second, more detailed and advanced dialog is available to specify more powerful search parameters.