When you run a program on your computer, data flows from the hard disk to the program via read operations. The data is then processed and displayed, and finally flows back from the progam to the hard disk via write operations.
For example, if you run the Freecell program to play a game, it starts by reading the previously recorded statistics, displaying and altering them as you play the game, and finally writing them back to disk for future reference.
Sandboxie changes the rules such that write operations do not make it back to your hard disk.
Sandboxie: a transient storage area, or sandbox. Data flows in both directions between programs and the sandbox. During read operations, data may flow from the hard disk into the sandbox. But data never flows back from the sandbox into the hard disk.
If you run Freecell inside the Sandboxie environment, Sandboxie reads the statistics data from the hard disk into the sandbox, to satisfy the read requested by Freecell. When the game later writes the statistics, Sandboxie intercepts this operation and directs the data to the sandbox.
If you then run Freecell without the aid of Sandboxie, the read operation would bypass the sandbox altogether, and the statistics would be retrieved from the hard disk.
The transient nature of the sandbox makes it is easy to get rid of everything in it. If you were to throw away the sandbox, by deleting everything in it, the sandboxed statistics would be gone for good, as if they had never been there in the first place.
Sandboxie works on Windows 2000, Windows XP, Windows Vista and Windows Server 2003. There is some support for older 64-bit versions of Windows: see the download page.
Sandboxie does not work on Windows 95, 98 or ME, or on Mac operating systems. There are no plans to support these environments.
There are no particular hardware requirements. Sandboxie needs only a small amount of memory and should have a very small impact on performance.
Released on 5 March 2008.
Changes to Sandboxie from version 3.22.
Improved compatibility with Windows Vista Service Pack 1.
Support for blocking Internet access to more than one sandboxed program at a time.
Support for the new bookmarks system introduced in Firefox 3.
Removed domain restrictions: Sandboxie can again be used in a domain network without additional license keys.
Some performance improvements and security enhancements.
Translation to Korean, contributed by doa.
Resolved conflicts with third-party software: AVG 8, Ad Muncher, Novell NetIdentity, Trend Micro Internet Security 2008.