Tools · windows os

Companies using MS-DOS_

As of 4 November 2026, 161 companies name MS-DOS 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
skilled trades and field service · 93 postings
Hiring on it, last 30 days
146 companies
Most often alongside
Microsoft Windows · 78 companies
161companies show MS-DOS, all sources
0on their website or in DNS records
161name it in their own job postings
347postings naming MS-DOS, last 90 days
02 — Two ways we see a tool

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

Job postings161

Companies whose own postings say the team works in MS-DOS. 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 MS-DOS. The rest of the posting population (161) runs MS-DOS without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on MS-DOS

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

UC San DiegoUniversities · La Jolla, United States10,001+ employeesSAL srl Società Acqua LodigianaWater supply utilities · San Grato, Italy51-200 employeesGrand River TransitScheduled bus operators · Kitchener Southwest, Canada501-1000 employeesCardinal Glass IndustriesGlass processing & units · United States5001-10000 employeesSTERISMedical device manufacturers · Mentor, United States10,001+ employeesMoogValve actuator manufacturers · East Aurora, United States10,001+ employeesU.S. Space & Rocket CenterMuseums & heritage sites · Huntsville, United States501-1000 employeesUni-SelectAuto parts distributors · Antioch, United States5001-10000 employeesEast Penn ManufacturingBattery & energy storage manufacturers · Lyon Station, United States10,001+ employeesStagoMedical device manufacturers · United States501-1000 employeesTJFACTPublic sector consulting · Atlanta, United States201-500 employeesFlightSafety InternationalFlight training schools · United States1001-5000 employeesQuarterhillOther public transit & transport infrastructure · Frisco, United States201-500 employeesKoniag Government ServicesPublic sector consulting · United States1001-5000 employeesOptimumConsumer isp broadband · Long Island City, United States5001-10000 employeesBrooksAutomation integrators · Bremen, United States1001-5000 employeesRIIDefence systems manufacturers · Alexandria, United States201-500 employeesThe Cheesecake FactoryRestaurant groups & hospitality operators · United States10,001+ employeesFrankenmuth InsuranceGeneral insurance brokerage · Frankenmuth, United States501-1000 employeescongatecEms contract manufacturing · San Diego, United States201-500 employees
161 companies show MS-DOS; 0 of them have over 1,000 employees.

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06 — Job-posting evidence

Who runs MS-DOS inside the company

The 161 companies whose postings name MS-DOS: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
skilled trades and field service
93 · 29
IT operations & business systems
55 · 39
Software engineering
39 · 26
Engineering (non-software)
35 · 18
Sales
22 · 14
facilities cleaning and security
17 · 3
Product, program & project management
17 · 5
Customer service & success
16 · 10
Administration & office
15 · 10
logistics warehouse and transport
15 · 8
Posting companies by country
companiesshare
United States
10968%
United Kingdom
106%
France
74%
Brazil
53%
Canada
53%
Germany
32%
Australia
21%
Switzerland
21%
Italy
21%
Austria
11%
Belgium
11%
Bulgaria
11%
Posting companies by size
companiesshare
Self-employed
11%
2-10 employees
96%
11-50 employees
149%
51-200 employees
2415%
201-500 employees
1912%
501-1000 employees
2113%
1001-5000 employees
2918%
5001-10000 employees
159%
10,001+ employees
2918%
Hiring on it right now
postings
Postings, last 30 days
268
Postings, last 90 days
347
All open postings
511

146 companies opened a role that names MS-DOS 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 MS-DOS teams also ask for

Tools named in the same postings as MS-DOS. Office software is left out.

08 — windows os

MS-DOS 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.

161 companies name MS-DOS 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/ms-dos)
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 MS-DOS 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

MS-DOS data: questions

How many companies use MS-DOS?

161 as of 4 November 2026: 0 carry MS-DOS on their website or in their DNS records and 161 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 MS-DOS'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 MS-DOS. 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 MS-DOS, 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 161 with verified e-mails and a weekly feed of new MS-DOS users is in the product. Counting is free.

Companies and people

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