Sandboxie - a transient storage area jail

Sandboxie provides a transient storage area (a sandbox) where data flows in both directions between programs and the sandbox and read operation data may flow from the hard disk into the sandbox, but data never flows back from the sandbox into the hard disk. In other words, programs in the sandbox can NEVER modify your system.


That means you can run malicious programs or test software without any issue: when you're done, just empty the sandbox. It also means you can browse the web safer with Internet Explorer or Firefox or whatever. Compromised programs cannot interact with your system. And best of all, Sandboxie is free :-).



You can also use it sort of like filemon/regmon (procmon) to monitor file changes / registry changes: