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.github github: Update issue templates for front-end Jul 9, 2018
boards Merge pull request #9406 from beduino-project/phywave-openocd-upstream Aug 17, 2018
core core: rmutex: include stdint.h Aug 3, 2018
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makefiles makefiles/vars.inc.mk: add doc on TOOLCHAIN lists Aug 16, 2018
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sys Merge pull request #8626 from miri64/gnrc_sixlowpan_iphc/enh/clean-up… Aug 17, 2018
tests Merge pull request #9759 from smlng/pr/pythonlibs/testrunner Aug 16, 2018
.drone.yml drone: adjust path to build_and_test.sh Nov 29, 2016
.gitattributes git: handle patch files as binary Dec 4, 2015
.gitignore .gitignore: Add scan-build to ignore list Aug 22, 2017
.mailmap git: mailmap: deduplicate @jia200x Nov 2, 2017
.murdock murdock: add hook support Jul 23, 2018
.travis.yml travis: install flake8 using pip3 Dec 20, 2017
CODE_OF_CONDUCT.md github: add Code of Conduct Dec 8, 2017
CONTRIBUTING.md doc: Add link to code of conduct to contribution guidelines Dec 8, 2017
LICENSE added missing LICENSE file Aug 27, 2013
LOSTANDFOUND.md lostandfound: fix typo on qemu-i386 Jan 11, 2018
MAINTAINING.md Docs: add "allow time to ack before dismissing" Jul 3, 2018
Makefile make: replace curly braces with parenthesis Mar 22, 2018
Makefile.base make: replace curly braces with parenthesis Mar 22, 2018
Makefile.dep netdev: Initialize sequence number to random value Jul 16, 2018
Makefile.include Merge pull request #9730 from miri64/make/enh/toolchain-supported-list Aug 16, 2018
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doc.txt doc: describe usage of DEVELHELP Nov 23, 2017
release-notes.txt release-notes.txt: Add Release 2018.07 notes Aug 13, 2018
uncrustify-riot.cfg Uncrustify: ternary operator indentation Jul 5, 2018


Nightly CI status master IRC

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The friendly Operating System for IoT!

RIOT is a real-time multi-threading operating system that supports a range of devices that are typically found in the Internet of Things (IoT): 8-bit, 16-bit and 32-bit microcontrollers.

RIOT is based on the following design principles: energy-efficiency, real-time capabilities, small memory footprint, modularity, and uniform API access, independent of the underlying hardware (this API offers partial POSIX compliance).

RIOT is developed by an international open source community which is independent of specific vendors (e.g. similarly to the Linux community). RIOT is licensed with LGPLv2.1, a copyleft license which fosters indirect business models around the free open-source software platform provided by RIOT, e.g. it is possible to link closed-source code with the LGPL code.


RIOT is based on a microkernel architecture, and provides features including, but not limited to:

  • a preemptive, tickless scheduler with priorities
  • flexible memory management
  • high resolution, long-term timers
  • support 100+ boards based on AVR, MSP430, MIPS, ARM7 and ARM Cortex-M
  • the native port allows to run RIOT as-is on Linux, BSD, and MacOS. Multiple instances of RIOT running on a single machine can also be interconnected via a simple virtual Ethernet bridge
  • IPv6
  • 6LoWPAN (RFC4944, RFC6282, and RFC6775)
  • UDP
  • RPL (storing mode, P2P mode)
  • CoAP
  • CCN-Lite
  • Sigfox
  • LoRaWAN (Experimental)


  • You want to start the RIOT? Just follow our quickstart guide or try this tutorial. For specific toolchain installation, follow instructions in the getting started page.
  • The RIOT API itself can be built from the code using doxygen. The latest version of the documentation is uploaded daily to riot-os.org/api.


If you compile RIOT for the native cpu and include the netdev_tap module, you can specify a network interface like this: PORT=tap0 make term


There is a shell script in RIOT/dist/tools/tapsetup called tapsetup which you can use to create a network of tap interfaces.


To create a bridge and two (or count at your option) tap interfaces:

./dist/tools/tapsetup/tapsetup [-c [<count>]]


To contribute something to RIOT, please refer to the development procedures and read all notes for best practice.



  • Most of the code developed by the RIOT community is licensed under the GNU Lesser General Public License (LGPL) version 2.1 as published by the Free Software Foundation.
  • Some external sources, especially files developed by SICS are published under a separate license.

All code files contain licensing information.

For more information, see the RIOT website: