Tools · building performance simulation

Companies using Relux_

As of 4 November 2026, 76 companies name Relux in their own job postings; it leaves no trace on websites or in DNS.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Largest market
–
Companies with 51+ staff
–
Top industry
–
Team that names it most
Engineering (non-software) · 221 postings
Hiring on it, last 30 days
79 companies
Most often alongside
DIALux · 103 companies
76companies show Relux, all sources
0on their website or in DNS records
76name it in their own job postings
236postings naming Relux, last 90 days
02 — Two ways we see a tool

Where Relux shows up

Each population is counted on its own. We never add them up without saying so, because they answer different questions.

Website and DNS footprint0

Companies whose own pages load Relux's scripts or embeds, or whose domain's mail and hosting records (SPF, DKIM, MX, CNAME) point at Relux. From our crawl of 41.5M company websites and the DNS sweep behind it. Reach: the tool is in the building.

Job postings76

Companies whose own postings say the team works in Relux. Read hourly from ~70 applicant tracking systems, with the function, a quote and a date. Intent: the team that runs it is hiring.

Both0

Companies in the footprint whose postings also name Relux. The rest of the posting population (76) runs Relux without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on Relux

Companies with 51+ employees and at least medium-confidence evidence in their own postings; job boards and portals left out.

Liberal Construction, LLCGeneral building contractors · Jones, United States51-200 employeesTridonicLED luminaire manufacturers · United States1001-5000 employeesBilfingerIndustrial engineering consulting · Mannheim, Germany10,001+ employeesINOVISMep engineering consulting · München, Germany51-200 employeesAECOMGeneral engineering consultancy · Dallas, United States10,001+ employeesGroupe OTE IngénierieGeneral engineering consultancy · Paris, France201-500 employeesArchitecture49Architecture practices · Vancouver (South West End), Canada201-500 employeesMICHELINTire & wheel retailers · United Kingdom51-200 employeesMercury EngineeringOther construction & building engineering · Dublin 15, Ireland1001-5000 employeesRD Leuchten AGLED luminaire manufacturers · Basel, Switzerland11-50 employeesSTF GruppeMep engineering consulting · Nottingham, Germany501-1000 employeesESA Elektroschaltanlagen Grimma GmbHElectrical contractors · Grimma, Germany201-500 employeesDÖRINGMep engineering consulting · Kassel, Germany51-200 employeesenco energie consulting GmbH & Co.KGMep engineering consulting · Kassel, Germany51-200 employeesRambollGeneral engineering consultancy · Denmark10,001+ employeesStantecOther engineering technical consulting · 10,001+ employeesZutariGeneral engineering consultancy · Johannesburg, South Africa1001-5000 employeesEgisMep engineering consulting · United Kingdom10,001+ employeesAtkinsRéalisCivil infrastructure contractors · Liverpool, United Kingdom10,001+ employeesXALDecorative luminaire makers · Graz, Austria1001-5000 employees
76 companies show Relux; 0 of them have over 1,000 employees.

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06 — Job-posting evidence

Who runs Relux inside the company

The 76 companies whose postings name Relux: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
Engineering (non-software)
221 · 76
Sales
16 · 11
construction and civil
4 · 4
skilled trades and field service
3 · 3
Unclassified
2 · 1
Posting companies by country
companiesshare
Germany
2533%
United Kingdom
1520%
United States
912%
Austria
34%
France
34%
Poland
34%
Canada
23%
Switzerland
23%
Belgium
11%
Denmark
11%
Greece
11%
Croatia
11%
Posting companies by size
companiesshare
2-10 employees
1317%
11-50 employees
1317%
51-200 employees
1520%
201-500 employees
1013%
501-1000 employees
23%
1001-5000 employees
1114%
5001-10000 employees
23%
10,001+ employees
1013%
Hiring on it right now
postings
Postings, last 30 days
187
Postings, last 90 days
236
All open postings
302

79 companies opened a role that names Relux in the last 30 days. A hiring team that names its tools is the moment to write to the person who owns the stack.

07 — Named alongside

What Relux teams also ask for

Tools named in the same postings as Relux. Office software is left out.

08 — building performance simulation

Relux against the rest of its category

Ranked by companies naming each tool in postings. Whole category →

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

76 companies name Relux in their own job postings; it leaves no trace on websites or in DNS, so the posting layer is the whole picture. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/relux)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • Website codeScripts, tags and embeds found on the company's own pages in our crawl of 41.5M sites. A tool counts once per company.
  • DNS recordsSPF includes, DKIM selectors, MX and CNAME records of the company's domain that point at Relux or another vendor. Swept in cycles; dedicated mail-provider and hosting facets open once coverage passes 80% per country.
  • Job postingsRead hourly from the applicant tracking systems behind company career sites. A tool counts when the employer's own text names it as the team's system; candidate wish-lists and apply boilerplate are excluded. Confidence low, medium or high per company.
  • Sending infrastructureCold-e-mail sending domains are look-alike domains on a provider's infrastructure (DNS records, certificate logs) that redirect to the company. Absence is not evidence: only companies with a found sending domain are counted.
  • CompaniesCountry, size and industry come from the company profile we build from its website; headcount from LinkedIn where known, otherwise estimated. Job boards, portals and aggregators are kept out of lists.
FAQ

Relux data: questions

How many companies use Relux?

76 as of 4 November 2026: 0 carry Relux on their website or in their DNS records and 76 name it in their own job postings; 0 show up in both. We keep the two counts apart because they measure different things.

What does "website or DNS" mean?

Our crawler finds Relux's scripts, embeds and tags on the company's own pages, and our DNS sweep reads the domain's mail and hosting records (SPF includes, DKIM selectors, MX, CNAMEs) that point at Relux. Either one puts the company in the footprint. The sweep is still running, so this number grows week by week.

Why is the job-posting number so much smaller?

A posting only names a tool when the team that will use it is hiring and chooses to say so. That makes it a smaller but stronger signal: it tells you which team runs Relux, with a quote and a date. The footprint tells you reach.

How fresh is this?

Career sites are read hourly, websites are re-crawled on a rolling schedule and DNS is re-swept in cycles. The date at the top is when these counts were computed.

Can I get the list?

Yes. The first 20 are on this page; the full 76 with verified e-mails and a weekly feed of new Relux users is in the product. Counting is free.

Companies and people

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