Which version of VirtualBox is for 32-bit?

VirtualBox binaries Version 6.0 will remain supported until July 2020. If you’re looking for the latest VirtualBox 5.2 packages, see VirtualBox 5.2 builds. Please also use version 5.2 if you still need support for 32-bit hosts, as this has been discontinued in 6.0. Version 5.2 will remain supported until July 2020.