Tools · library scholarly resources

Companies using OCLC_

As of 4 November 2026, 251 companies show OCLC: 194 carry it on their website or in their DNS records, 57 name it in their own job postings, and 0 do both.

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

Largest market
Belgium · 128 companies
Companies with 51+ staff
134 · 69% of the footprint
Top industry
Public, community & associations · 89%
Team that names it most
arts media and entertainment · 78 postings
Hiring on it, last 30 days
40 companies
Most often alongside
MARC 21 · 14 companies
251companies show OCLC, all sources
194on their website or in DNS records
57name it in their own job postings
75postings naming OCLC, last 90 days
02 — Two ways we see a tool

Where OCLC 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 footprint194

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

Job postings57

Companies whose own postings say the team works in OCLC. 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 OCLC. The rest of the posting population (57) runs OCLC without a public trace on the site or in DNS, which is where job data earns its place.

03 — Who uses it

Companies on OCLC

Companies with 201+ employees and high-confidence evidence in their own postings; job boards and portals left out.

Seen through the website or DNS only

Companies with 1,000+ employees whose website or DNS carries OCLC but whose postings never name it: the part of the market job data alone misses.

251 companies show OCLC; 2 of them have over 1,000 employees.

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04 — Footprint breakdown

By country, company size and industry

The 194 companies with OCLC on their website or in DNS. Click a country for its own page where we have one.

By country
companiesshare
Belgium
12866%
Netherlands
5729%
United States
53%
BQ
11%
Germany
11%
France
11%
United Kingdom
11%
By company size
companiesshare
2-10 employees
3015%
11-50 employees
3015%
51-200 employees
6232%
201-500 employees
6131%
501-1000 employees
95%
1001-5000 employees
21%
By industry
companiesshare
Public, community & associations
17389%
Consumer services & leisure
1910%
Business & finance services
11%
Property & construction
11%
05 — What their DNS and pages also say

The mail, hosting and web stack of OCLC companies

Other tools found on the same companies' websites or in their DNS records. Mail providers and senders come from SPF, DKIM and MX; the rest from page code.

Microsoft 365185 companies · 95%
microsoft_teams81 companies · 42%
Microsoft Entra ID80 companies · 41%
microsoft_intune80 companies · 41%
SendGrid61 companies · 31%Mailchimp51 companies · 26%apple46 companies · 24%Matomo38 companies · 20%flexmail35 companies · 18%exclaimer33 companies · 17%
mailchimp_transactional33 companies · 17%
Brevo29 companies · 15%Mailgun28 companies · 14%TOPdesk25 companies · 13%
afas_software24 companies · 12%
recreatex24 companies · 12%
06 — Job-posting evidence

Who runs OCLC inside the company

The 57 companies whose postings name OCLC: by country, size and the function of the role. The second number in the function table is companies.

Postings by function
postings · companies
arts media and entertainment
78 · 40
Data & AI
4 · 4
Education & training
2 · 1
Software engineering
2 · 2
Administration & office
1 · 1
IT operations & business systems
1 · 1
Product, program & project management
1 · 1
research and science
1 · 1
Posting companies by country
companiesshare
United States
5393%
France
12%
United Kingdom
12%
Netherlands
12%
Posting companies by size
companiesshare
Self-employed
24%
2-10 employees
47%
11-50 employees
35%
51-200 employees
712%
201-500 employees
1323%
501-1000 employees
814%
1001-5000 employees
1119%
5001-10000 employees
59%
10,001+ employees
47%
Hiring on it right now
postings
Postings, last 30 days
54
Postings, last 90 days
75
All open postings
117

40 companies opened a role that names OCLC 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 OCLC teams also ask for

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

MARC 2114 companies
AlmaLinux19 companies
RDA8 companies
marcedit12 companies
MSC Marc11 companies
ex libris alma10 companies
archivesspace9 companies
oclc worldshare12 companies
openrefine8 companies
contentdm9 companies
FOLIO9 companies
oclc worldshare management services6 companies
08 — library scholarly resources

OCLC 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.

251 companies show OCLC: 194 carry it on their website or in their DNS records, 57 name it in their own job postings, and 0 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/oclc)
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 OCLC 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

OCLC data: questions

How many companies use OCLC?

251 as of 4 November 2026: 194 carry OCLC on their website or in their DNS records and 57 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 OCLC'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 OCLC. 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 OCLC, 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 251 with verified e-mails and a weekly feed of new OCLC users is in the product. Counting is free.

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