1. What Is Sandboxie? Sandboxie is a long-standing isolation tool for Windows (now open-source as Sandboxie Plus). It runs applications in a controlled “sandbox” — a virtual box where programs can execute, but cannot permanently alter your system files, registry, or personal data. Once you delete the sandbox contents, all changes vanish. Think of it like a test kitchen: you can cook anything, but the main kitchen stays spotless. 2. What Does “Sandboxie Crypto” Mean? The phrase “Sandboxie crypto” can refer to three distinct scenarios :