Companies that use OpenAPI
It is a publicly available application programming interface that provides developers with programmatic access to a proprietary software application or web service.
20,998
companies
List of companies using OpenAPI
curl --request POST \
--url "https://api.theirstack.com/v1/companies/search" \
--header "Accept: application/json" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <api_key>" \
-d "{
\"company_technology_slug_or\": [
\"open-api\"
]
}"Technology
is any of
OpenAPI

Employees2.3kIT Services and IT Consulting
OpenAPIHigh confidence
Employees132IT Services and IT Consulting
OpenAPIHigh confidence
Employees61kFinancial Services
OpenAPIHigh confidence
Employees51kIT Services and IT Consulting
OpenAPIHigh confidence
Employees239Technical and Vocational Training
OpenAPIHigh confidence
Employees5.2kRevenue$300MIT Services and IT Consulting
OpenAPIHigh confidence
Employees4.1kRevenue$1.2BSoftware Development
OpenAPIHigh confidence
Employees200kRevenue$75BFinancial Services
OpenAPIHigh confidence
Employees320IT Services and IT Consulting
OpenAPIHigh confidence
Employees2.2kRevenue$7MIndividual and Family Services
OpenAPIHigh confidence
We have data on 20,998 companies and users that use OpenAPI. Our OpenAPI users and customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
Technology Usage Statistics and Market Share
How to target OpenAPI users
- How to customize this list?
You can customize this data to your needs by filtering for geography, industry, company size, revenue, technology usage, job postions and more. You can download the data in Excel or CSV format.
- How to be alerted when companies adopt this technology?
You can get alerts for this data. You can get started by selecting the technology you are interested in and then you will receive alerts in your inbox when there are new companies using that technology.
- How to import this data to my CRM?
You can export this data to an Excel file, which can be imported into your CRM. You can also export the data to an API.
Frequently asked questions
Our data is sourced from job postings collected from millions of companies. We monitor these postings on company websites, job boards, and other recruitment platforms. Analyzing job postings provides a reliable method to understand the technologies companies are employing, including their use of internal tools.
We refresh our data daily to ensure you are accessing the most current information available. This frequent updating process guarantees that our insights and intelligence reflect the latest developments and trends within the industry.
OpenAPI, also known as OpenAPI Specification (OAS), is a widely adopted technology that defines a standard, language-agnostic interface to RESTful APIs. It allows both humans and computers to understand the capabilities of a service without accessing its source code. By using a structured format, OpenAPI enables developers to generate interactive documentation, client libraries, and code samples automatically.
In the category of API Tools, OpenAPI plays a crucial role in simplifying API development and consumption. It provides a way for developers to design, document, and standardize their APIs, fostering interoperability and collaboration among different systems. With OpenAPI, teams can ensure that their APIs are consistent, well-documented, and easy to integrate, ultimately enhancing the user experience of their applications.
OpenAPI was founded by SmartBear Software in 2016, with the goal of standardizing how APIs are described. Previously known as Swagger, the technology was rebranded as OpenAPI to emphasize its open-source nature and community-driven development. SmartBear's motivation behind OpenAPI was to address the growing complexity of API ecosystems and the need for a common language to describe API specifications.
Currently, OpenAPI holds a significant market share within the API Tools category, with many companies and developers adopting it as the preferred standard for API design. With the rise of microservices architecture and the increasing demand for seamless integrations between applications, the use of OpenAPI is expected to continue growing in the future. Its intuitive approach to API documentation and streamlined development process make it a valuable asset for organizations looking to streamline their API workflows and enhance their digital offerings.