Tools · embedded os rtos

Companies using Buildroot_

As of 4 November 2026, 252 companies name Buildroot 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
Software engineering · 519 postings
Hiring on it, last 30 days
172 companies
Most often alongside
Linux · 283 companies
252companies show Buildroot, all sources
0on their website or in DNS records
252name it in their own job postings
435postings naming Buildroot, last 90 days
02 — Two ways we see a tool

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

Job postings252

Companies whose own postings say the team works in Buildroot. 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 Buildroot. The rest of the posting population (252) runs Buildroot without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on Buildroot

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

DelairUav aerospace manufacturers · United States51-200 employeesLayerZero Power SystemsElectrical equipment manufacturers · Aurora, United States201-500 employeesNXP SemiconductorsSemiconductor manufacturers · Eindhoven, Netherlands10,001+ employeesNordic SemiconductorSemiconductor manufacturers · HK1001-5000 employeesJohns Hopkins University Applied Physics LaboratoryUniversity research labs · Laurel, United States5001-10000 employeesNETGEARCommunications & network equipment manufacturers · San Jose, United States1001-5000 employeesApexSpace systems manufacturers · United States51-200 employeesSpaceXSpace systems manufacturers · United States1001-5000 employeesDraperDefence systems manufacturers · Cambridge, United States1001-5000 employeesEnsera DesignMechanical design engineering · United States51-200 employeesBenetelCommunications & network equipment manufacturers · Dublin 8, Ireland51-200 employeesIndra GroupDefence systems manufacturers · Alcobendas, Spain10,001+ employeesTerumo Blood And Cell TechnologiesMedical device manufacturers · Mississauga (West Rathwood / East Hurontario / SE Gateway), Poland5001-10000 employeesHENSOLDTDefence systems manufacturers · Taufkirchen, Germany5001-10000 employeesRakettitiedeCustom software development agencies · Helsinki, Finland51-200 employeesCornet Technology IndiaDefence systems manufacturers · India51-200 employeesBlue OriginSpace systems manufacturers · Kirkland, United States10,001+ employeesAerospacelabSpace systems manufacturers · Mont-Saint-Guibert, Belgium201-500 employeesAsylon RoboticsUav aerospace manufacturers · United States51-200 employeesWORK MicrowaveCommunications & network equipment manufacturers · Holzkirchen, United States51-200 employees
252 companies show Buildroot; 0 of them have over 1,000 employees.

Filter by country, size, team and source, open verified e-mails for the decision makers, or push new matches to your CRM every week.

Free plan: 1,000 records, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

06 — Job-posting evidence

Who runs Buildroot inside the company

The 252 companies whose postings name Buildroot: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
Software engineering
519 · 303
Engineering (non-software)
17 · 12
IT operations & business systems
15 · 13
Product, program & project management
3 · 3
Customer service & success
2 · 2
Data & AI
2 · 2
Marketing & communications
1 · 1
Sales
1 · 1
Posting companies by country
companiesshare
United States
14056%
Germany
177%
Sweden
94%
France
83%
United Kingdom
83%
Canada
62%
Belgium
42%
Brazil
42%
India
42%
Poland
42%
Spain
31%
Ireland
31%
Posting companies by size
companiesshare
Self-employed
73%
2-10 employees
3614%
11-50 employees
3514%
51-200 employees
6325%
201-500 employees
2811%
501-1000 employees
156%
1001-5000 employees
3413%
5001-10000 employees
104%
10,001+ employees
2410%
Hiring on it right now
postings
Postings, last 30 days
277
Postings, last 90 days
435
All open postings
600

172 companies opened a role that names Buildroot 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 Buildroot teams also ask for

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

08 — embedded os rtos

Buildroot 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.

252 companies name Buildroot 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/buildroot)
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 Buildroot 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

Buildroot data: questions

How many companies use Buildroot?

252 as of 4 November 2026: 0 carry Buildroot on their website or in their DNS records and 252 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 Buildroot'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 Buildroot. 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 Buildroot, 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 252 with verified e-mails and a weekly feed of new Buildroot users is in the product. Counting is free.

Companies and people

Get this list your way

The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.

Every company on Buildroot,
with the person who owns it

Connect the MCP server or the API, filter on Buildroot, and get 1,000 records free.

  1. 01Sign up, no card
  2. 02Connect Claude, ChatGPT or an API key
  3. 03Ask for your market, 1,000 records free