Sandboxie – Sandbox Your Browser / Software / Programs In Windows
iSpeech.org
Sandboxie enables you to easily sandbox your browser and other programs, it runs your applications in an isolated abstraction area called a sandbox. Under the supervision of Sandboxie, an application operates normally and at full speed, but can’t effect permanent changes to your computer. Instead, the changes are effected only in the sandbox.
[adsense size='1']
For those too lazy to set up a full on vm image for testing stuff, this is a pretty good alternative.
You can download Sandboxie here:
SandboxieInstall.exe
Or read more here.
Gloss