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What is Project Haystack?

Project Haystack is an open source initiative to streamline working with data from the Internet of Things. We standardize semantic data models and web services with the goal of making it easier to unlock value from the vast quantity of data being generated by the smart devices that permeate our homes, buildings, factories, and cities. Applications include automation, control, energy, HVAC, lighting, and other environmental systems.

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WGs are addressing additional equipment systems and applications for the built environment.



Are you new to Project Haystack?
Start here with our primer Introduction to Project Haystack.



Dig a little deeper into a reference implementation "Applying Haystack Tagging to a Sample Building".

Tech Blog

Important updates for the Project Haystack community.

Latest News

The Latest Press Releases by the Project Haystack community.

Recent Articles

Recently published articles by the Project Haystack community for the Project Haystack community!

Connections Magazine

Fall 2020


Haystack 4 Update

Brian Frank, Technical Lead, Project Haystack gives us the update.


CM Industrial

The Role of Open Source - Getting Inside Project Haystack with Executive Director John Petze.


Taking Project Haystack and Niagara to the Real IIoT

The IIoT is akin to our BMS/BAS installations and can leverage much of the work we’ve done on open protocols and standards in the IoT space.


The Future of Building Control – Rule-Based or Predictive?

“The use of a semantic tagging schema, such as Haystack tagging, is an essential requirement for any system – either rule-based or predictive.

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