I have quite a few uses for my AsymmetricCrypt project myself, but not a gread deal of adoption from others. I think the big barrier to adoption is that it requires .NET framework, which means it cannot be directly used in embedded devices and such. In order to address that problem, I have started the C++ implementation of the same tool, which is now in C++ and uses OpenSSL. This makes it possible to compile and use the tool in mobile phones, linux security cameras, etc.