A bunch of interesting school projects that I completed at The Cooper Union.
Operating Systems has a bunch of C programs written to explore GNU/Linux fundamentals.
Data Structures and Algorithms has some C++ programs implementing a Hashtable, Heap, Dijkstra's Algorithm, Stacks, and Queues.
Software Engineering an online version of Set created entirely in Java (https://github.com/elieweintraub/GroupSetGame).
Computer Architecture contains a Matrix calculator written in MIPS assembly.