I get asked all the time, why is it free? Is it any good? There are thousands of free programs out there, some you can download without joining up or logging in. The most obvious answer to the why is it free question is because it is crap software that no one would pay to download, or it is software deployed as deception to download the real payload by stealth, such as spyware, registry cleaners, or general junkware otherwise known as potentially unwanted programs or PUP’s.
But there are some excellent and really useful free programs such as display fusion’s free version of the multiple monitor software. In this case you can see there is a pro version and the free version is the upgrade path. The internet’s version of the two dollar shoes out front of the shoe shop. This is also true of many antivirus or malware programs. Some software is free because it falls into the realm of economically nonviable. It might be ok and kind of useful but these days it would need to be very essential for someone to splurge yet another computing expense. The biggest ever rort is paying for an antivirus when Windows 10 has the free Defender built in. None of them work all the time for various strains of malware as we have seen with cryptolocker and ransonware criminal theftware.
My advice, and I do practice everything I preach, is to keep third party software to an absolute minimum. The more programs you have running the more chance you will have of outdated software or drivers ruining your day, hogging your system with little to show for all the effort. System cleaners, registry cleaners and the like are examples of this. They might clear out the files you need later for a clean uninstall, or clear out files your system looks for in the future.