5.1.22 Supported host operating systems
10.9 – 10.12
5.0.40 Supported host operating systems
10.8 – 10.11
Mac OS X 10.7 (Lion) and earlier was removed with VirtualBox 5.0.
4.3.40 Supported host operating systems (no longer supported, support ended 2015/12)
10.6 – 10.9
4.2.36 Supported host operating systems (no longer supported, support ended 2015/12)
10.6 – 10.8
4.1.44 Supported host operating systems (no longer supported, support ended 2015/12)
10.6 – 10.8
4.0.36 Supported host operating systems (no longer supported, support ended 2015/12)
10.6 – 10.8
Mac OS X 10.4 (Tiger) support was removed with VirtualBox 3.1.