Computing Atlas

How Computing Was Built
Sign In
Text size
100%
Theme

Switch Atlas

System

ChorusOS

Operating System

ChorusOS is a microkernel real-time operating system built around a message passing model, grown from research begun in 1979 at INRIA, the French national computer science research institute, making it one of the earliest microkernels alongside Mach before it was commercialized by the startup Chorus Systemes SA. It later shifted from its original distributed computing focus toward real time embedded applications, ran on x86, Motorola 68000, PowerPC, SPARC, ARM and MIPS processors, and was POSIX compatible. Sun Microsystems bought Chorus Systemes in 1997 for its microkernel technology and used it inside JavaOS. Its last version, 5.1, was released as open source in 2011, and the system is now discontinued, though former developers continued related work through successor projects such as VirtualLogix. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Classification
License
Sun Public License 2
Status
Status
Discontinued 1
Year
1979 1
FAQs

Who kept ChorusOS going after Sun stopped supporting it?

The founders of Chorus Systèmes formed Jaluna in 2002; it became VirtualLogix and maintained ChorusOS as C5.

Sun Microsystems acquired Chorus Systèmes in 1997 for its microkernel technology, and Sun and later Oracle no longer support ChorusOS. The founders of Chorus Systèmes started a new company called Jaluna in August 2002. Jaluna then became VirtualLogix, which Red Bend acquired in September 2010. VirtualLogix built embedded systems using Linux and ChorusOS, which it named VirtualLogix C5, and it actively maintained that system.
Connections

In Field

Operating Systems, Fields
Source Wikipedia: ChorusOS

Licensed Under

Sun Public License, Concepts
In the Other Atlases

Developed By

Sun Microsystems

Also in Business Atlas: the developer of this subject.

Sources
1. Wikipedia: ChorusOS
  • Infobox: released
    1979
  • entity record, description (status)
    Its last version, 5.1, was released as open source in 2011, and the system is now discontinued, though former developers continued related work through successor projects such as VirtualLogix.
  • In Field: Operating Systems, Lead sentence
    ChorusOS is a microkernel real-time operating system designed as a message passing computing model.
View the Source
2. Wikidata: ChorusOS
Wikidata Q670316, class allow-list match (w-wdresolver-0926)View the Source
Comments (0)
No comments yet. Be the first to share a thought.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.