The Real-Time Executive for Multiprocessor Systems or RTEMS is a full featured RTOS that supports a variety of open API and interface standards. Major decisions about RTEMS are made by the Steering Committee, guided by the Mission Statement. We encourage everyone to contribute changes and help testing RTEMS, and we provide access to our development sources with anonymous CVS and snapshots. We strive to provide regular, high quality releases, which we want to work well on a wide range of embedded targets using cross development from a variety of hosts including GNU/Linux, MS-Windows, FreeBSD, Mingw, Cygwin, and Solaris.

The RTEMS Project is getting ready for the Google Summer of Code 2010. We have updated the Open Projects page in the Wiki and begun to promote GSOC. An RTEMS Project GSOC flyer is available as part of the standard GSOC downloads.

Releases and Active Development

  • Mainline: will become 4.10 (obtain from CVS)
  • 4.9 Release Branch: RTEMS 4.9 (CVS checkout with the tag rtems-4-9-branch) (latest is 4.9.3)
  • 4.8 Release Branch: RTEMS 4.8 (CVS checkout with the tag rtems-4-8-branch) (latest is 4.8.1)
  • 4.7 Release Branch: RTEMS 4.7 (CVS checkout with the tag rtems-4-7-branch) (latest is 4.7.3)
  • 4.6 Release Branch (CLOSED): The last public RTEMS 4.6 release WAS 4.6.6). Legacy support with bug fixes is available.
March 08, 2010
New RTEMS Website Deployed

It is pretty obvious if you are reading this, but we now have a new website. Take a few minutes and look around. It is based upon Drupal and should provide a strong foundation for the future.

I would like to thank Chris Johns for his assistance in...

March 03, 2010
GSOC 2010 RTEMS Presentation and Flyer Available

We here in RTEMS-land have been busy getting ready for the 2010 edition of the Google Summer of Code. We have already given a presentation to the IEEE-CS Student Chapter at the University of Tennessee at Chattanooga. Now...

February 19, 2010
RTEMS in Google Open Source Blog

(February 20, 2010) The wonderful people at the Google Open Source Program have added a blog entry on RTEMS and our success in the Google Summer of Code 2009. We are hopefully looking forward to...

February 11, 2010
Solar Dynamic Observatory Launches

This satellite includes five radiation hardened Coldfire CPUs running RTEMS. There are more details and links at the RTEMS Ramblings Blog. We are looking forward to the discoveries sure to be made with SDO.

December 31, 2009
Ticker Turns 21

The RTEMS ticker test (a.k.a. sp01) was the first test created during the development of RTEMS. It sets the date and time to 9:00 pm on 31 December 1988. This coincides with the earliest part of the RTEMS Project. Since there is no birth certificate, we are treating this as RTEMS Birthdate....