BHODemon is a free tool that will list all Browser Helper Objects that are installed on a Windows system by scanning the registry and give you the ability to disable them. This will also list "good" BHOs as well, but nevertheless is a useful tool in detecting and disabling malicious software.

It is available at:

http://www.definitivesolutions.com/bhodemon.htm

BHODemon scans your Registry for BHOs, and presents any it finds in a list.  By highlighting a BHO in this list, and clicking the "Details" button, you can see information about this BHO, and even disable it if you wish.  BHOs are disabled by simply renaming the DLL that houses them.  By renaming the DLL, instead of deleting it, you have the option of enabling it later if you wish.  Why would you want to do that?  Because the program that installed the BHO will not run if it can't find the DLL: Go!Zilla, for example, won't run if you remove its BHOs.

Click here to download BHODemon 1.0!  The file is 470K, and is now a self-extracting executable - no ZIP software required!  Also, it will place itself in the 'StartUp' group for you automatically.

TEST RESULTS: It's a keeper for me.  In my own testing it only found an IE based BHO for Acrobot 6.0, but this looks like a great tool to help in the fight against spyware.  I took mine out of startup as I stay fairly clean, but have it in the Quick launch toolbar if needed.