Article · Wikipedia archive · Last revised Jun 18, 2026

SPIN (operating system)

The SPIN operating system is a research project implemented in the computer programming language Modula-3, and is an open source project. It is designed with three goals: flexibility, safety, and performance. SPIN was developed at the University of Washington.

Last revised
Jun 18, 2026
Read time
≈ 1 min
Length
245 w
Citations
3
Source
SPIN
DeveloperUniversity of Washington
Written inModula-3
OS familyMach-like1
Working stateDiscontinued
Source modelOpen source
Initial release1994 (1994)
Final release1.0 / November 1996 (1996-11)
Repositorywww-spin.cs.washington.edu/Distro/docs/downloadInfo.html
Marketing targetResearch
Available inEnglish
Update methodDownload, compile
Supported platformsIA-32
Kernel typeMicrokernel2
Official websitewww-spin.cs.washington.edu

The SPIN operating system is a research project implemented in the computer programming language Modula-3, and is an open source project. It is designed with three goals: flexibility, safety, and performance. SPIN was developed at the University of Washington.

The kernel can be extended by dynamic loading of modules which implement interfaces that represent domains. These domains are defined by Modula-3 INTERFACE. All kernel extensions are written in Modula-3 safe subset with metalanguage constructs and type safe casting system. The system also issued a special run-time extension compiler.

One set of kernel extensions provides an application programming interface (API) that emulates the Digital UNIX system call interface. This allows Unix applications to run on SPIN.3

References

References

  1. Bershad, Brian N.; Savage, Stefan; Pardyak, Przemys; Sirer, Emin Gün; Fiuczynski, Marc E.; Becker, David; Chambers, Craig; Eggers, Susan (1995). "Extensibility, safety and performance in the SPIN operating system". Proceedings of the 15th ACM Symposium on Operating System Principles (SOSP-15): 267–284.
  2. Bershad, Brian N.; Chambers, Craig; Eggers, Susan; Maeda, Chris; Mcnamee, Dylan; Pardyak, Przemyslaw; Savage, Stefan; Sirer, Emin Gün (1994). "SPIN: an extensible microkernel for application-specific operating system services". Proceedings of the 6th ACM SIGOPS European Workshop: Matching Operating Systems to Application Needs: 68–71.
  3. Dion, David (1996). "A User-Level Unix Server for the SPIN Operating System". University of Washington Technical Report UW-CSE-96-11-01.
External links