Software
7 Taskbar Tweaker
A program for tweaking the Windows 7 taskbar. It provides options like disabling grouping, middle-click to close, etc.
MUltimate Assembler (an OllyDbg plugin)
A multiline (dis)assembler for OllyDbg, which supports labels and data (C-style string). A perfect tool for writing code caves and stuff.
Resource Hacker FX: the improved Resource Hacker
Remember the good ol’ Resource Hacker? It is no longer being developed, and this version fixes it’s most notable issues.
winapiexec
A small tool that allows you to run WinAPI functions through command line parameters.
Ragdoll Masters Online
An add-on for the Ragdoll Masters game that allows you to play online.
RAR Unlocker
This tool allows you to view the RAR archive attributes, and set/remove the archive lock attribute (which protects the archive from modifications).