The problem is how many remote desktop softwares are VNC based. It works, but its slooooow as molasses. RDP itself is about as proprietary as software can get, to the point that any real corporate implementation requires specific terminal services licensing and dedicated infrastructure. Its still by far the best remote desktop solution out there though.
If you're just looking to access your home PC at work, something like LogMeIn would probably work best since it's browser/java based to connect. Just create an account and install the client on your home PC.