PlanMaker is the high-performance spreadsheet component of the SoftMaker Office suite, designed as a direct alternative to Microsoft Excel. To access its full suite of "deep" professional features, you must enter a valid product key, which is typically provided upon purchase or through a subscription. Deep Features and Capabilities
Here is the secret that many "free product key" seekers overlook: SoftMaker offers a completely free, legal version of PlanMaker called FreeOffice. planmaker product key
If the program keeps asking for the key every time you open it, your computer might have a restriction on the c:\ProgramData\SoftMaker planmaker product key
SoftMaker offers generous licensing terms compared to many competitors: planmaker product key