Hi, those who don't know: RIOT is a modern open source operating system for low-end IoT devices, https://riot-os.org/. Initially developed by folks from academia, the RIOT community now consists of companies, makers, and hobbyist, distributed all around the world. The RIOT community meets annually f2f at the RIOT Summit, which will be held this year at the Aalto Design Factory, Helsinki, Finland from September 5-6, 2019. The RIOT Summit aims for bringing together RIOTers, beginners and experts, as well as people interested in the IoT in general and decision makers who plan to deploy RIOT in the future. The event combines plenary talks, hands-on tutorials, and demos. All details are available at https://summit.riot-os.org/2019/. The organizers of the RIOT Summit call for any contribution that relates to RIOT and the Internet of Things. If you want to present a talk, please consider the Call for Contributions: * https://summit.riot-os.org/2019/call-for-contributions The following companies generously support the RIOT Summit 2019: Cisco, Ericsson, wolfSSL, Zühlke. In case of case questions, you can contact me diretly or send an email to summit@riot-os.org. Thanks matthias -- Matthias Waehlisch . Freie Universitaet Berlin, Computer Science .. http://www.cs.fu-berlin.de/~waehl