🆚 OpenAPI vs. RSD
- 📈 RSD is much more popular than OpenAPI.
- 🌍 RSD is more popular in all countries.
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.
Really Simple Discovery (RSD) is an 
XML format that helps client software find the services needed to read, edit, or "work with" weblogging software.
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.
- 🥉 Third most popular in El Salvador in the Standards category.
- 🥉 Third most popular in Bhutan in the Standards category.
- 🥉 Third most popular in Libya in the Standards category.
- ⭐ 4th most popular in Spain in the Standards category.
- ⭐ 4th most popular in Italy 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.
OAuth
GraphQL
OpenID
XFN
OpenSearch🗃️ 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.