There is a solution to every problem. But most often it is the problem you are not aware of. Let my solutions inspire you.
These applications are taken from real life. Most of them have once solved a problem for me, or still do. Some are also useful for many others. All are available for free.
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Flashes the console window entry in the taskbar and changes the integrated progress bar (Windows Vista+).
Small console program that converts files to base64 encoding and back again. You can select the Windows clipboard directly as in- and output.
Simple program to securely delete entire hard disks. This is especially recommended to remove all personal data from a disk before selling it.
3 items, ca. 760 lines of code, estimated development costs: 1 500 €