🆚 RSD vs. Sitemap
RSD
SitemapType
About
Really Simple Discovery (RSD) is an 
XML format that allows client software to discover services provided by web publishing systems.
It helps clients find endpoints for reading, editing, and interacting with website content through APIs.
A sitemap is a specialized XML file that lists a website's URLs and helps search engines discover pages available for crawling and indexing.
It can contain metadata such as last modification dates, update frequency, and page priority, supports extensions for images, videos, news, and multilingual pages, and is typically referenced through the <link rel="sitemap"> 
HTML element or the robots.txt file.
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
- 🥉 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 Brazil in the Standards category.
- ⭐ 4th most popular in Iran in the Standards category.
- 🔥 14th most popular in Slovenia in the Standards category.
- 🔥 18th most popular in Japan in the Standards category.
- 🔥 20th most popular in Taiwan in the Standards category.
- 🔥 20th most popular in Iran in the Standards category.
- ⬆️ 22nd most popular in New Zealand 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.
XFN
Humans.txt
LLMs.txt🗃️ 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 3,604,716 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.