PLOTICUS is a command line utility for creating bar, line, pie, boxplot, scatterplot, sweep, heatmap, vector, timeline, Venn diagrams, and other types of charts and plots. ploticus is good for automated or just-in-time graph generation. It handles date, time, and categorical data nicely, and has some basic statistical capabilities. It can output to GIF, PNG, SVG, SWF, JPEG, PostScript, EPS, and X11. You can use convenient preset options or create complex scripts with rich and detailed color and style operations.
Project-Based Calendaring System (PBCS) is an open source Web-based calendaring system, designed to be a useful tool for project managers or project planners. It allows users to have appointments of multiple people in one overview, making it easy to plan appointments for projects in the future. There are special overviews to see all appointments at once for a week or a month. There is also a section to add notes or reminders.
PTimeTracker is a small Qt-based program that helps you keep track of the time spent on projects. The time in minutes spent on the active project is displayed on the icon and title bar and therefore viewable even when the program is minimised. A detailed report is available on total hours worked on different projects. This report displays the amount of time spent on each of the projects per day.
QHacc is a personal accounting program based on Qt. It features double- or single-entry bookkeeping and a reconciliation window. It also provides support for memorized and split transactions, graphing, reporting, archiving, and scheduled transactions that can be based on the account balance.