BeOS R5.1d0 or Dano/EXP (also known as EXP, Dano, and incorrectly as Dan0/EXP or Dan0) is the build codename and most commonly used name to refer to a leaked R5.1 prerelease of the Be Operating System. Dano's build date is 15 November 2001, the day of

Be Inc. Be Inc. was an American computer company founded in 1990. It is best known for the development and release of BeOS, and the BeBox personal computer. Be was founded by former Apple Computer executive Jean-Louis Gassée with capital from Seymour Cra ...

's closure. Dano features an improved

network stack The protocol stack or network stack is an implementation of a computer networking protocol suite or protocol family. Some of these terms are used interchangeably but strictly speaking, the ''suite'' is the definition of the communication protoco ...

called

BONE A bone is a Stiffness, rigid Organ (biology), organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red blood cell, red and white blood cells, store minerals, provid ...

, initial support for

802.11b IEEE 802.11b-1999 or 802.11b is an amendment to the IEEE 802.11 wireless networking specification that extends throughput up to 11 Mbit/s using the same 2.4 GHz band. A related amendment was incorporated into the IEEE 802.11-2007 standard. ...

wireless networking, some

3D acceleration A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mobi ...

-capable graphics drivers, a redesigned

graphical user interface The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, inste ...

, a replacement

USB Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers. A broad v ...

subsystem with

USB mass storage The USB mass storage device class (also known as USB MSC or UMS) is a set of computing communications protocols, specifically a USB Device Class, defined by the USB Implementers Forum that makes a USB device accessible to a host computing device ...

support, and other improvements. Many of these features had been promised for

BeOS R5 BeOS R5 is the final version of BeOS from Be Inc. It was released in March 2000, and came in two varieties: Professional and Personal. R5 was the 4th major release of BeOS for a public audience, and the 6th since it left developer-only stages. ...

a year earlier and not delivered. In a potential move towards releasing the system as open source software, many proprietary items had been removed: the MP3

encoder Encoder may refer to: Electronic circuits * Audio encoder, converts digital audio to analog audio signals * Video encoder, converts digital video to analog video signals * Simple encoder, assigns a binary code to an active input line * Priority e ...

was replaced with LAME, and

OpenSSL OpenSSL is a software library for applications that provide secure communications over computer networks against eavesdropping or need to identify the party at the other end. It is widely used by Internet servers, including the majority of HTT ...

replaced the

RSA Encryption Engine RSA may refer to: Organizations Academia and education *Rabbinical Seminary of America, a yeshiva in New York City *Regional Science Association International (formerly the Regional Science Association), a US-based learned society *Renaissance So ...

in the

NetPositive NetPositive (often called Net+) is the default web browser for the discontinued Be Operating System (BeOS). It includes partial support for JavaScript, but no CSS support. It was originally developed as a stop-gap measure because no browsers had ...

web browser A web browser is application software for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. Browsers are used on ...

. The

ZETA Zeta (, ; uppercase Ζ, lowercase ζ; grc, ζῆτα, el, ζήτα, label= Demotic Greek, classical or ''zē̂ta''; ''zíta'') is the sixth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 7. It was derived f ...

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

External links

BeOS R5.1d0
version information
Historical BeOS
version information {{BeOS BeOS ru:BeOS#BeOS R5.1d0