🆚 OpenAPI vs. YAML

Compare technologies based on real-world usage data *

📈 YAML is much more popular than OpenAPI.
🌎 YAML is more popular in the United States, the United Kingdom, and Germany.
🌍 OpenAPI is more popular in San Marino and Montenegro.

Type

Standard

Standard

About

OpenAPI is a specification language for defining HTTP APIs, typically written in YAML or JSON.

It enables automated generation of interactive documentation (via tools such as Swagger UI and Redoc), schema-based request and response validation, automatic creation of client SDKs and server stubs in multiple programming languages, and integration into CI/CD pipelines.

YAML is a data serialization language designed to be human friendly and work well with modern programming languages for common everyday tasks.

Headquarters

San Francisco, California, United States

Website

openapis.org #358,465

yaml.org #1,123,508

Categories

Standards › Rank #32

Standards › Rank #14

Popularity

Determined by the number of sites using each technology.

YAML is 15 times more popular than OpenAPI.

Total websites

Market share

Standards

Popularity by country

Determined by the number of sites detected from each country.

YAML is more popular in the United States, the United Kingdom, and Germany, while OpenAPI is more popular in San Marino and Montenegro.

United States

United Kingdom

Germany

Australia

India

Netherlands

Canada

Japan

France

Italy

Awards

⬆️ 22nd most popular in the Netherlands in the Standards category.
⬆️ 22nd most popular in Denmark in the Standards category.
⬆️ 22nd most popular in Peru in the Standards category.
⬆️ 23rd most popular in Chile in the Standards category.
⬆️ 23rd most popular in Bulgaria in the Standards category.

🔥 13rd most popular in the United Kingdom in the Standards category.
🔥 13rd most popular in India in the Standards category.
🔥 13rd most popular in Australia in the Standards category.
🔥 13rd most popular in Indonesia in the Standards category.
🔥 13rd most popular in Pakistan in the Standards category.

Popularity by domain category

Determined by the number of sites in each category.

YAML is more popular than OpenAPI in all market segments.

Online Shopping

Marketing/Merchandising

Fashion/Beauty

Business

Education/Reference

Entertainment

Sports

Internet Services

Blogs/Wiki

Software/Hardware

Top sites

Top-ranked sites that use these technologies.

Name

Rank

haveibeenpwned.com

#1,581

#2,831

electrodepot.fr

#2,850

#3,819

#4,061

Name

Rank

#49

#70

#76

#134

#340

Compare alternatives

Technologies with similar characteristics.

See also

YAML technology profile

* According to recent studies, many of online reviews are fake.
When making your decision, it is better to rely on data that cannot be falsified.
Our service evaluates the popularity of technologies by the number of websites using them.

Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.