What is/are the difference(s) between these two? And why would I want one or the other or both? This is for a commercial .NET C# WPF application that will be packaged via WiX. I will need a trial license to purchased license capability.
I came into the same question and have the luck to have their Eziriz CTO replied:
You only need one product. .NET Reactor is 100% concentrated on protection without making a compromise to the licensing system. On the other side IntelliLock is 100% concentrated on licensing and the corresponding protection functionality is optimized for the licensing system. That is the reason why IntelliLock can even provide licensing support for Linux (Mono) or the Compact Framework or offer full license management support via an ASP.NET interface. The protection of IntelliLock is not as strong as the one from .NET Reactor but the differences could be kept within a limit. IntelliLock can provide Obfuscation/Control Flow Obfuscation/Inject Invalid MetaData and String Encryption even without a restriction.
A significant difference between both products is the 100% managed solution of IntelliLock. The managed nature of IntelliLock allows you to create assemblies which are still cross-platform compatible and use of very flexible and advanced licensing features. IntelliLock takes all advantages the .NET Framework do offer. Therefore it is often used to protect component libraries. In case you want to have the extra bit of ultimate protection .NET Reactor should be the first choice. In contrast to IntelliLock, .NET Reactor injects native protection code. Therefore it is a question of preference which tool to choose to protect your .NET assemblies. :)
To simplify, .NET Reactor and Intellilocks do more or less the same thing with .NET Reactor being stronger on the protection algorithm and with Intellilocks having an easier GUI but a weaker protection strength as compared with .NET Reactor.
I tried both. I suggest going with .NET Reactor; while not as user-friendly as Intellilocks, .NET Reactor does everything Intellilocks can do and with stronger protection.