My Utility toolkit would have:
1.) Hex Editor - XVI32, or any other
2.) Beyond Compare - Comparison of files
3.) Cygwin shell installable complete with perl, gcc,gprof,gcov,gdb and related tools,bash,vim, development/debugging tools
4.) A model makefile for *nix platform
5.) Winzip utility
6.) Source insight or any other good code browsing tool
7.) Ghostscript and GSView
8.) PDF reader
9.) Good quick antivirus tool/exe
-AD