When comparing VirtualBox vs Sandboxie, the Slant community recommends VirtualBox for most people. In the question“What are the best power user tools for Windows?” VirtualBox is ranked 3rd while Sandboxie is ranked 18th. The most important reason people chose VirtualBox is:
VirtualBox is available for free with source code available [here](https://www.virtualbox.org/browser/vbox/trunk). A "VirtualBox Extension Pack" that includes virtual USB 2.0, VirtualBox RDP & PXE boot support is available only under a commercial license.
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Pros
Pro Free and mostly open source
VirtualBox is available for free with source code available here. A "VirtualBox Extension Pack" that includes virtual USB 2.0, VirtualBox RDP & PXE boot support is available only under a commercial license.
Pro Now free and open source
Continuing forward as Sandboxie-plus while still updating its classic version.
Pro Windows 10/11 Home does not include Sandbox
As that is limited to Pro, this is a great alternative.
Cons
Con Inferior performance
Apart from second-class performance in virtualization, there are some visual glitches with Windows 8.1 on Mavericks.
Con Confusing interface and lacking usability features
VirtualBox might be a bit confusing for beginners - it requires an understanding of a lot more technical details than other VMs.
Con Windows 10 has Windows Sandbox
Only relevant if using Pro edition of Windows.