The first version of BeOS shipped with the BeBox to a limited number of developers in October 1995. It supported analog and digital audio and MIDI streams, multiple video sources, and 3D computation. Developer Release 6 (DR6) was the first officially available version.

The BeOS Developer Release 7 (DR7) was released in April 1996. This includes full 32-bit color graphics, "workspaces" (virtual desktops), an FTP file