ApiHooks 6 is a set of libraries and tools for advanced
process modification and noninvasive debugging
on Microsoft(R) Windows(R) NT, 2000, XP, Server 2003, Loghorn, Vista x86 and x64.

AH6 is not compatible with AH5.
It can hook even autochk at boot time or
a process before its full initialization (= before DllMains of statically linked modules are first time executed).
Works under any account and doesn't modify files.
There's still no need for services or kernel drivers.

ApiHooks 6 is free for NON_COMMERCIAL use only.
Current version : 6.6
Previous version : 6.51
Previous version : 6.5
Previous version : 6.4
Previous version : 6.3