20 SkipList containers for C++ that work with STL. Combines set/map functionality with random access in logn time. One container is a multilist where you can order the same elements in a variety of different ways simultaneously.
A simple set of C++ Templates which abstract the common problem of updating a value based on changes in time. Comes with a simple example - just add the OverTime folder to your includes path and compile it to see how things work.