Building Automation (HVAC, BACnet, KNX, smart buildings)

Where this market publishes its structure

• BTL Listing of Tested Products (bacnetinternational.net/btl, ?m= per manufacturer) machine-readable, 236 manufacturers, 221 with a website; 10 linked (certified_products by device profile)
• KNX Association manufacturer members (knx.org/community/manufacturers, 69 pages) machine-readable, 685 members, 648 with a website; 8 linked; contact names/emails never read
• Project Haystack members (marketing.project-haystack.org/about-us) machine-readable, 29 members (6 founding), logo links; 4 linked
• Brick Consortium members (brickschema.org/consortium) machine-readable, 10 members (6 commercial); 4 linked; academic held
• BTL listing archive (bacnetinternational.net/btl/archives.php) not machine-readable: not read: superseded listings, not current conformance
• KNX certified product database (ETS catalogue / my.knx.org) not machine-readable: login required
• BACnet International member directory not machine-readable: members-only
• ASHRAE (SSPC 135) not machine-readable: the standards body; no implementer or conformance register
• Project Haystack / Brick tagging adopters not machine-readable: no adopter list published; membership is the only structured list (project-haystack.org/about/members 404)
• LonMark certified products / DALI Alliance DALI-2 register not machine-readable: not swept this pass

Own = declares at least one integration itself; covered = visible only because an aggregator, standards body, regulator or partner contract names it; distribution-only = listed only on cloud marketplaces it sells through, a channel reported beside, never counted as its own declared integrations; undeclared = nothing we can read, so no number; declares_compatibility = providers with a `compatible` shape vote, report only (kin, 2026-10-13): never counted as own, never in depth or position.

Taxonomy how this market maps onto apis.io

Derived 2026-10-15 from the 74 providers in this market we could resolve in the catalog. The percentage is the share of those providers carrying each one; it describes the market, not the tag or industry. Tag groups have no page of their own yet, so they are listed unlinked.

share of resolved cohort carrying it; tags >=0.20 & >=3 members (max 12, junk dropped), tag_groups >=0.20 (cooccurrence, non-cross-cutting; max 8), industries >=0.20 (max 6), areas >=0.10 (max 6; areas are keyword-matched and sparse), capabilities L1 >=0.20 (max 8); derive-market-taxonomy.py

Leaders by position (provisional)

Provisional: grouped by position, depth compared within a position only. Distribution (cloud marketplaces) and iPaaS bridges are counted beside position, never inside it. Unknown-builder listings are left out of position shares and counted here.

gravity 1 · other companies invest to build on it

builds-on 2 · publishes apps on other platforms' stores

covered 1 · reached mainly through aggregators

standard 16 · listed by a voluntary standard's own directory

long-tail 3 · reached only through iPaaS bridges

distribution 1 · only sells through cloud marketplaces

undeclared 50 · declares nothing we can read: no number