Project Haystack standardizes 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.
Project Haystack encompasses the entire value chain of building systems and related intelligent devices. Owners and consultants can specify that Haystack conventions are used in their building automation systems to ensure cost effective analytics and management of their buildings for years to come.
System integrators and manufacturers who integrate Haystack support into their projects and products are better positioned for the future of providing value-added services.
Project Haystack is a 501C tax-exempt non-stock corporation formed May 28, 2014 under the provisions of Chapter 10 of Title 13.1 of the Code of Virginia of 1950. All work developed by the project-haystack.org community is provided for use as open source software.
OT cyberattacks are costing owners millions in ransoms and lost tenants. Here's the practical playbook that's working—without unlimited budgets.
Reporting live from NexusCon 2025 in Denver. Building owners discuss moving smart buildings programs from budget struggles to operational integration. Real case studies, no vendor hype, honest conversations about what actually works.
Water systems remain the least digitized building infrastructure despite posing major risks—from catastrophic leaks to Legionella outbreaks. New non-invasive sensors now offer targeted solutions without requiring comprehensive building automation, transforming water from a utility bill line item into a managed asset with real-time visibility.
Head over to Nexus Connect and see what’s new in the community. Don’t forget to check out the latest member-only events.
Go to Nexus ConnectJoin Nexus Pro and get full access including invite-only member gatherings, access to the community chatroom Nexus Connect, networking opportunities, and deep dive essays.
Sign Up
Nexus Labs exists to move the smart buildings industry forward, without the fluff.
On Wednesday, we send out the renowned (and free) Nexus Newsletter.
