🆚 OpenAPI vs. YAML
- 📈 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.
OpenAPIType
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 ("YAML Ain't Markup Language") is a human-readable data serialization language designed for representing structured data and exchanging it between systems and programming languages.
It uses indentation-based syntax with minimal structural characters, represents data using three core primitives such as mappings, sequences, and scalars, and includes features such as anchors and aliases for referencing data, along with a simple typing system for numbers, strings, and booleans.
Headquarters
Popularity
Determined by the number of sites using each technology.
Market share
Popularity by country
Determined by the number of sites detected from each country.
Awards
- ⬆️ 22nd most popular in Denmark in the Standards category.
- ⬆️ 22nd most popular in Peru in the Standards category.
- ⬆️ 23rd most popular in the Netherlands 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 Australia in the Standards category.
- 🔥 13rd most popular in India 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.
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
CSS
OAuth
GraphQL
OpenID
HTML
XML🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,375,483 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.