These are some selected productivity tools I have written to improve performance, and help out in various scenarios and situations:

Category / LinkDescription
Exam SoftwareCross-platform and reliable examination software for various computing courses.
MS Access / Excel ToolsExtras for Microsoft Access and Excel, either for specific purposes or to add extra features to improve productivity.
Miscellaneous Productivity ToolsSeveral small tools for Windows to make various tasks quick and easy.