ChirpStack: The New Open Source LoRa Server

Daryl Malas
Principal Architect, Advanced Technology Group

Dec 5, 2019

Over the past couple of years, CableLabs and Orne Brocaar have introduced multiple major releases of the LoRa® Server, a community led open source LoRaWAN® network server. The goal of this effort is to provide a powerful tool for enabling LPWAN services using unlicensed bands worldwide. The server is licensed under the MIT license, so it can be used freely for any use from testing to production. Our objective continues to focus on enabling growth and creativity in the LPWAN ecosystem using the LoRaWAN protocol.

We are excited to announce that LoRa Server has been renamed ChirpStack™. What does this rebranding mean for our community of users? Well, nothing really, with exception of assuming a new name. The server continues to provide the functions, capability, LoRa Alliance® compliance and MIT licensing it always has. However, the name and URL location of the resources has changed.

The ChirpStack software, source-code and documentation are now available here: The discussion forum is now available here:

LoRa Server renamed ChirpStack

Since its debut in 2016, the LoRa Server project has gained a lot of traction and is now being used by thousands of users from (currently) 144 countries around the world. And, we fully expect the ChirpStack project will continue to serve this user base with valuable tools, software, and discussion.

“Solutions built on Semtech’s LoRa devices offer the real potential to change the world by delivering analytical insight into how we live and work today. To create a smarter tomorrow, developers working with LoRa devices and the LoRaWAN protocol need access to easy-to-use accelerators that help drive applications to market more quickly,” said Alistair Fulton, Vice President and General Manager of Semtech’s Wireless and Sensing Products Group. “CableLabs and its ChirpStack software have contributed to the growth of LoRaWAN, creating value to the ecosystem by helping to simplify the IoT development process and enable the creation of new, innovative products for the next generation of use cases.”

We have automated the renaming process in the lastest version as much as possible, and we hope this migration will only be a nominal inconvenience. A full list of considerations and changes have been provided on the forum. If you experience any challenges with this migration, please communicate issues and feedback on the forum.

In the latest release(s) you will find a lot of interesting new features. Using NetID filters it is possible to reduce the bandwidth usage of your gateways. This is useful when you are using a cellular backhaul. We have also made it easier to correlate log messages across the different components, which will help when troubleshooting issues as they occur. To increase the geolocation accuracy, we have added support to perform geolocation on multiple uplink frames. We will continue to improve and add new features and we are looking forward to your feedback and contributions to the ChirpStack project.

Note: LoRa is a registered trademark or service mark of Semtech Corporation or its affiliates.



Join us at the CableLabs NDA Vendor Forum

Ralph Brown

Apr 14, 2015

Once a year CableLabs holds the NDA Vendor Forum. This is a unique opportunity for companies who are interested in developing technologies for the cable industry to get up to speed with the latest technology projects underway at CableLabs and to provide input on our technology development roadmap for the year ahead.

This year’s Forum comes at an exciting time for the industry. Our member companies in the U.S. and abroad are accelerating their plans to deploy gigabit services, expand the coverage and capabilities of their Wi-Fi networks, and offer new services that benefit subscribers at home and on the go. CableLabs project roadmap for 2015-16 reflects these priorities, and our success depends on the substantial technical expertise and engineering contributions from the vendor community.

Our Forum is in San Jose, CA this year, so we hope to see some new companies who may have not had the chance to attend one of our Forums. You’ll be able to network with CableLabs staff and other vendors, and get any of your questions answered with respect to technology projects at CableLabs.

If you are already an NDA vendor, register for the event. If you are interested in attending the, you’ll first need to a member of our NDA community. Please refer to our tutorial on How To Engage. There is no cost to join, and benefits of NDA membership (no cost) are numerous, and include the ability to review our technical specifications before they become public.

I look forward to seeing you in San Jose on the April 23.

Event Details

Thursday, April 23, 2015
8:00am to 6:00pm
Hilton San Jose, Downtown
300 S Almaden Blvd., San Jose, CA 95110

Register now

Ralph Brown is the Chief Technology Officer at CableLabs and can be reached at