Some services (such as NFS and MS File Sharing, and X and Remote Desktop) give access to some system calls indirectly, but I've never heard of making system calls accross a network, no matter what the OS.

If anything, Windows is the most open to this. Remote file access, remote registry editing, DCOM, etc. The number of entry points is insane.

By the way, you could always create a small module that satifies your IDE. It doesn't actually have to do anything.