Want the old program? Sandboxie Classic is still maintained and available from the official GitHub page. The SandMan UI is based on Qt, and replaces the old MFC (Microsoft Foundation Class Library) based interface used for SbieCtrl.exe. The GUI is modern and looks user-friendly compared to the legacy version's interface. The biggest change however is of course the main interface of the application, which the developer calls the Sandman UI (short for Sandboxie Manager). Sandboxie Plus has a different icon, it features a sand bucket and a shovel. What's the difference between Sandboxie and Sandboxie Plus? It is maintained by David Xanatos, the developer who created TaskExplorer.
There is an officially recognized fork of the original program called Sandboxie Plus, which is also open source.
