Question 1

What is Mainframes?

Accepted Answer

Large, high‑speed computers that support many workstations or peripheral devices.

Question 2

How many companies buy Mainframes?

Accepted Answer

Based on our data, 21,247 companies buy Mainframes. This number is updated daily as we discover new companies through job posting analysis.

Question 3

What types of companies buy Mainframes?

Accepted Answer

Mainframes is relevant across multiple industries including IT Services and IT Consulting, Financial Services, Professional Services. Companies range from startups to enterprises with 10,000+ employees.

Question 4

How does TheirStack track companies related to Mainframes?

Accepted Answer

TheirStack analyzes millions of job postings daily from company career pages, job boards, and recruitment platforms. When a company mentions Mainframes in their job descriptions, requirements, or responsibilities, we identify them as related to Mainframes and add them to our database.

Question 5

How can I get the full list of companies that buy Mainframes?

Accepted Answer

You can access the complete list of 21,247 companies on TheirStack. The data includes company name, industry, size, location, funding, and revenue. Available via our web app or API.

Question 6

How often is the company data updated?

Accepted Answer

Our database is refreshed daily. We continuously monitor job postings to detect new companies buying Mainframes and update existing records.

Company	Country	Industry	Employees	Revenue	Technologies
Kyndryl	United States	IT Services and IT Consulting	90k	$19B	Mainframes
IBM	United States	IT Services and IT Consulting	340k	$61B	Mainframes
Infosys	India	IT Services and IT Consulting	372k	$17B	Mainframes
Ensono	United States	IT Services and IT Consulting	3.7k	$650M	Mainframes
Citi	United States	Financial Services	200k	$75B	Mainframes
CGI	Canada	IT Services and IT Consulting	89k	$9.5B	Mainframes
Tata Consultancy Services	India	IT Services and IT Consulting	718k	$27B	Mainframes
DXC Technology	United States	IT Services and IT Consulting	91k		Mainframes
JPMorganChase	United States	Financial Services	244k		Mainframes
EY	United Kingdom	Professional Services	407k	$45B	Mainframes

Companies buying Mainframes

List of companies that buy Mainframes