Compare · api specs data formats

OpenAPI VS XML_

As of 30 October 2026, XML is named by 3,931 companies and OpenAPI by 1,052; OpenAPI skews to companies under 200 people (42% vs 47%), XML to companies over 1,000 (30% vs 36%).

As of 30 October 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

The website-and-DNS footprint is not comparable between a marketing suite and a CRM: OpenAPI's script and mail records show on hundreds of thousands of small sites, XML rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.

OpenAPI: 2–200 employees
42%
XML: 2–200 employees
47%
OpenAPI: 1,000+ employees
36%
XML: 1,000+ employees
30%
Postings per company, 90 days
2.5 · 2.7
Website or DNS footprint
0 · 0
1,052companies name OpenAPI
3,931companies name XML
200name both
2,660 · 10,701postings in 90 days, OpenAPI · XML
02 — Side by side

Who chooses which

Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.

By company size
SegmentOpenAPIshareXMLshareLeans
Self-employed121%341%even
2-10 employees606%2416%even
11-50 employees15415%75019%XML
51-200 employees22521%84521%even
201-500 employees13813%52613%even
501-1000 employees888%3399%even
1001-5000 employees18918%62016%OpenAPI
5001-10000 employees565%1775%even
10,001+ employees13012%39910%OpenAPI
By industry
SegmentOpenAPIshareXMLshareLeans
Technology & software56153%1,93249%OpenAPI
Business & finance services25825%80020%OpenAPI
Manufacturing & industry636%41110%XML
Media & content283%1193%even
Utilities & infrastructure262%802%even
Commerce & trade182%1123%even
Health care182%732%even
Consumer services & leisure162%872%even
Transport, logistics & rental162%802%even
Automotive151%441%even
Public, community & associations121%942%even
Property & construction111%571%even
By country
SegmentOpenAPIshareXMLshareLeans
United States53951%2,17755%XML
United Kingdom959%2657%OpenAPI
Germany676%2847%even
France485%1163%even
Canada293%1193%even
Switzerland283%361%even
India252%2226%XML
Poland222%602%even
Spain192%––outside top 12
Brazil182%341%even
Australia162%642%even
Netherlands121%722%even
Sweden––341%outside top 12
Postings by team (share of each tool's postings)
SegmentOpenAPIshareXMLshareLeans
Software engineering2,25067%9,88952%OpenAPI
IT operations & business systems2718%2,64114%XML
Data & AI2046%9455%even
Product, program & project management943%4412%even
arts media and entertainment431%3532%even
Engineering (non-software)291%3922%even
Sales221%1611%even
Customer service & success160%3082%even
Quality, safety & environment80%770%even
Legal, compliance & risk40%––outside top 12
construction and civil30%––outside top 12
Design & UX30%––outside top 12
Marketing & communications––2721%outside top 12
Finance & accounting––1201%outside top 12
Unclassified––720%outside top 12
Cite this

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

XML is named by 3,931 companies in job postings and OpenAPI by 1,052; 200 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/openapi-vs-xml)
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 →

  • Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
  • Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
  • SegmentsCountry, size and industry from the company profile built from its website.
  • Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
FAQ

OpenAPI vs XML: questions

Which is more used, OpenAPI or XML?

By companies naming it in their own job postings, XML (3,931) over OpenAPI (1,052). By website-and-DNS footprint, XML (0 vs 0), because its scripts and mail records sit on many small company sites.

Who chooses OpenAPI?

42% of OpenAPI companies have 2 to 200 employees, against 47% for XML. 36% of OpenAPI companies have over 1,000 employees, against 30% for XML.

Do companies run both?

200 companies name both in their postings, usually OpenAPI in marketing and XML in sales, or during a migration.

Where do these numbers come from?

From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.

Companies and people

Get either 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 either tool,
with the person who owns it

Filter on OpenAPI or XML, 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