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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ARLog: Amateur Radio Logbook.netdbwindows★★★
Amateur Radio Log for managing of QSOs and QSL cards. Straightforward usage through realtime filter views and direct editing. Including data analysis functions.
One item, ca. 6 550 lines of code, estimated development costs: 13 000 €