I'd like to present a couple of useful C++ classes and toolkits of mine.
HybridList : Fast N lg (N) sort algorithm for lists
QProfile toolkit - a class to profile your code - Very lean and efficient tool to profile your code under Windows 9x/NT.
QuickBookmarks - easy way to navigate in your code
CopyWord - macro to copy word under cursor to clipboard
AutoContents - generates list of functions and jumps from 'contents' to the function definition