Question 1

What is Open Source?

Accepted Answer

Open source refers to software whose original source code is publicly accessible, allowing anyone to modify, redistribute, and use it freely.

Question 2

How many companies implement Open Source?

Accepted Answer

Based on our data, 95,909 companies implement Open Source. This number is updated daily as we discover new companies through job posting analysis.

Question 3

What types of companies implement Open Source?

Accepted Answer

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

Question 4

How does TheirStack track companies related to Open Source?

Accepted Answer

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

Question 5

How can I get the full list of companies that implement Open Source?

Accepted Answer

You can access the complete list of 95,909 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 implementing Open Source and update existing records.

Company	Country	Industry	Employees	Revenue	Technologies
Capital One	United States	Financial Services	61k		Open Source
Canonical	United Kingdom	Software Development	1.9k	$126M	Open Source
Red Hat	United States	Software Development	20k	$3.4B	Open Source
IBM	United States	IT Services and IT Consulting	333k	$61B	Open Source
EY	United Kingdom	Professional Services	401k	$45B	Open Source
NVIDIA	United States	Computer Hardware Manufacturing	46k	$27B	Open Source
GEICO	United States	Insurance	32k		Open Source
Grafana Labs	United States	Software Development	1.8k	$300M	Open Source
Microsoft	United States	Software Development	237k	$198B	Open Source
Elastic	United States	Software Development	5k	$1B	Open Source

Companies implementing Open Source

List of companies that implement Open Source