The VirtualBox base package is open source (GPLv2). However, certain high-value features require Oracle’s proprietary Extension Pack. It is a single .vbox-extpack file that installs on top of a working VirtualBox 6.1 installation and must match the exact minor version of the base software (e.g., 6.1.38 with 6.1.38 ExtPack).
| Requirement | Detail | |-------------|--------| | | Base + Extension Pack must share identical build number (e.g., 6.1.32 r149290) | | Licensing | Free for personal, educational, and evaluation use. Requires Oracle PUEL license for commercial deployment | | Host OS support | Windows, macOS (Intel), Linux, Solaris | | Guest OS support | Any x86/x64 OS (Windows 11 officially supported with TPM workarounds in 6.1.40+) | virtualbox 6.1 extension pack