Build secure, connected, future-proof devices with ZephyrÂź
A proven RTOS ecosystem, by developers, for developers
Catching up on an exciting quarter!
Dear community members,
We are a little late getting this out, but we couldnât miss the chance to share everything thatâs been happening across the Zephyr Project community over the past quarter! Q3 was packed with progress from new releases, events, collaborations, and community contributions that continue to strengthen the Zephyr ecosystem.
Thanks for your patience, and for being such an active part of this growing community. Hereâs an overview of the key developments from Q3.
New Member Companies Recently Joined The Zephyr Project
In August, the Zephyr Project announced that Silicon Labs upgraded to Platinum membership, while Beningo Embedded Group, Raytac, and Tenstorrent joined as new Silver members. These additions highlight Zephyrâs momentum as a secure, connected, and flexible RTOS ecosystem that helps developers stay ahead on security, compliance, and innovation.
The blog also revisits the Zephyr 4.2 release and previews the Zephyr Developer Summit 2025 in Amsterdam, featuring interactive demos, industry speakers, and exclusive Zephyr swag.
Read the full blog to learn how the ecosystem is growing and whatâs ahead for the community.
Zephyr RTOS 4.2 Now Available: Introduces Renesas RX Support, USB Video Class, and More
Earlier this quarter, Zephyr 4.2 was released marking a record number of 810 indivudual developers contributing to it worldwide! This milestone brings Renesas RX support, USB Video Class (UVC) for smart cameras, a Twister power harness for monitoring consumption, and MQTT 5.0. With nearly 100 new boards, Zbus graduating to a stable API, and big improvements to the Devicetree developer experience, this release is packed with features you wonât want to miss.
Catch up on all the details (and demos!) in the full blog here.
A Growing Lineup of Products Running Zephyr
We are excited to share that 6 new products running Zephyr RTOS were added to our Product Catalog till date! From wearables to industrial-grade devices, these additions highlight the growing adoption of Zephyr in real-world applications. Learn more.
Whatâs New:
New: The Zephyr RTOS Podcast
This quarter, we launched the Zephyr RTOS Podcast, your new go-to for insider updates, developer stories, and all the buzz from the community.
Episode 1 recaps the Zephyr Developer Summit and shares insights into new features like OCPP support for EV charging, the Twister Display harness, and fresh Adafruit & MikroE shields.
Episode 2 covers the CI meltdown, the new PR dashboard, and tools like DT Doctor for troubleshooting Devicetree issues.
Episode 3 goes deep on the dangers of macros, running Zephyr on new RP2040 boards (and even a reverse-engineered keyboard!), plus fresh SoC and USB support.
Episode 4 brings highlights from The Things Conference, the new op-amp subsystem, and the Zephyr Developer Survey 2025.
Whatâs in the SOSS? Podcast #40 â S2E17 From Manager to Open Source Security Pioneer: Kate Stewartâs Journey Through SBOM, Safety, and the Zephyr Project:
In this episode of Whatâs in the SOSS? Kate Stewart shares her unconventional journey into open source from navigating legal hurdles at Motorola to leading safety-critical initiatives at the Linux Foundation. She discusses the evolution of SPDX and SBOMs, how the Zephyr Project became a security exemplar with gold-level OpenSSF badging, and offers insights on the EUâs Cyber Resilience Act (CRA). A must-listen for anyone interested in embedded systems, security best practices, or the future of open source. Listen to the full episode.
EdgeVerse Techcast: Driving Open Source Forward: NXP and the Zephyr Project:
In this episode, Bridgette and Kyle welcome David Leach, who shares how NXP goes beyond adopting Zephyr by actively leading in governance, engineering, and sustainability. From maintaining connectivity protocols like Bluetooth Classic and enterprise Wi-Fi, to serving as maintainers, collaborators, and release managers, NXP ensures Zephyr is stable, secure, and production-ready. David highlights NXPâs long-term commitment and calls on developers not just to adopt Zephyr, but to get involved and shape the ecosystem. Listen to the podcast.
Catch Up on Some Recent Blog Posts
This quarter has been packed with exciting updates from the Zephyr Project community!
From event recaps at Open Source Summit Europe, OSS India, and OSS North America to highlights from global meetups in Prague, Munich, Sapporo, Boston, and Guadalajara, our blogs capture the energy and insights shared worldwide.
We also explored Zephyrâs role in science and education and shared insights into technical topics like extending AutoML in Kenning and Zephyr, plus a junior engineerâs perspective on getting started.
Be sure to read these blogs and keep an eye out for even more stories coming soon!
Check out the remaining events for this year in this Community Calendar.
Zephyr Turns 10 Survey
GOAL: Zephyr is turning 10, and we want to understand its impact over the past decade. We're interested in hearing from Zephyr users and contributors about how the project has made a difference in your products and work, and how you've seen the community evolve. We also want to hear from RTOS users who have chosen other solutions. Your insights will help shape the next chapter of Zephyr!
AVAILABILITY OF RESULTS: We will summarize and publish the survey findings in a report on the Linux Foundation website. The Linux Foundation will post the dataset for this survey and instructions for its use in their publicly available section of Data.World.
BONUS: As a thank you for qualifying and completing this survey, you will receive a code on the confirmation page that entitles you to a 35% discount on any Linux Foundation e-learning training course or certification exam. Please note that you must register for a course before April 30th, 2026, to redeem this offer. You can find the complete catalog of training and certifications at https://training.linuxfoundation.org/full-catalog/. The promotional price applies only to individual purchases. The offer is not valid with any other discount combinations and does not include THRIVE-ONE subscriptions or any FinOps courses and certifications.
PRIVACY: Survey respondents do not need to provide any personal identifying information. Data collection in this survey is subject to the Linux Foundationâs Privacy Policy, available at https://linuxfoundation.org/privacy
Contributors who have had a technical code and/or documentation contribution accepted into the Zephyr Project, and current Zephyr Maintainers, can apply for their Contributor badge and/or Maintainer badge using this online form
Is Your Product Running Zephyr? Get It Listed!
The Zephyr RTOS powers a wide range of commercial products already in the market. Our Product Catalog showcases real-world devices built on Zephyr from wearables and sensors to industrial and medical solutions.
If your product runs Zephyr, we would love to include it! Submit your product for listing using this form, and help highlight the growing impact of the Zephyr ecosystem.
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