Here are a few resources that might be useful to other lecturers. Contributions would be most welcome: most of these things are kept in GitHub, so it should be easy to collaborate on any projects of mutual interest.
LaTeX I’ve created a couple of LaTeX classes for teaching at Memorial University. These include templates for course outlines, labs and memos.
libgrading is a C++11 library for testing the functional correctness of C and C++ assignments.