Dano (BeOS)

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**BeOS R5.1d0 "Dano/EXP"**
A screenshot of BeOS R5.1d0 ("Dano/EXP")
Company/ developer:	Be Inc
OS family:	BeOS
Source model:	Closed source
Kernel type:	Hybrid kernel
License:	Proprietary
Working state:	Stopped

Dano0/EXP (aka R5.1d0 aka EXP aka Dano aka (incorrectly) Dan0) is the build codename and most commonly used name to refer to a leaked R5.1 prerelease of the BeOS operating system. With a build date professing to be 15 November 2001, the day of Be Incorporated's closure, Dano features BONE an improved network stack, initial support for 802.11b wireless networking, some 3D acceleration-capable graphics drivers, a redesigned graphical user interface, a replacement USB subsystem with USB mass storage support, as well as other improvements.

Many of these features had been promised for BeOS R5 a year earlier and not delivered.

In a potential move towards the system becoming capable of being open source, many licence fee encumbered items had been removed, including the mp3 encoding software being replaced with LAME, and OpenSSL replacing the RSA Encryption Engine in the NetPositive web browser.

The yellowTAB ZETA operating system was initially based on the Dano codebase, though it has since evolved.

[edit] PowerPC support

Although not commonly known, there exists a PowerPC build of the Dano codebase.^{[citation needed]} This version lacks BONE and the 3d and new Media kits. However, the build does include the new Kernel and the newer AppServer (non sliding tabs). In reality, the PPC version is probably based on the early Dano builds (aka 5.04).^{[citation needed]}