RSD
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.
According to our data, RSD is the 7th most popular standard on the web.
It is detected on 29.6% of all websites.
It appears on 45.8% of all websites in Spain, 42.8% in Italy, and 38.2% in Australia.
📊 Rankings and Market Share
- Standards
- Rank: 7
- Market share: 32.7%
🏆 RSD Awards
- ⭐ 4th most popular in El Salvador in the Standards category.
- ⭐ 4th most popular in Bhutan in the Standards category.
- ⭐ 5th most popular in Iran in the Standards category.
- ⭐ 5th most popular in Bulgaria in the Standards category.
- ⭐ 5th most popular in Lithuania in the Standards category.
- ⭐ 5th most popular in Bangladesh in the Standards category.
- ⭐ 5th most popular in Macedonia in the Standards category.
- ⭐ 5th most popular in Nepal in the Standards category.
- ⭐ 5th most popular in Uganda in the Standards category.
- ⭐ 5th most popular in Afghanistan in the Standards category.
⚡ Sites Using RSD
We have data on 1,197,316 websites that use RSD. Here is a list of some of the top ranked ones.
The highest rated site using RSD is 
en.wikipedia.org.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | en.wikipedia.org |
United States | English | |
| 2 | #239 | United Kingdom | British English | |
| 3 |  usercentrics.com |
#249 | Germany | English |
| 4 |  wordpress.com |
#315 | United States | English |
| 5 |  clever.com |
#354 | United States | American English |
| 6 | #463 | India | American English | |
| 7 | #514 | United States | American English | |
| 8 | #535 | United States | American English | |
| 9 | #776 | Brazil | Brazilian Portuguese | |
| 10 | #822 | India | American English | |
| 11 | #843 | English | ||
| 12 | #878 | American English | ||
| 13 | #886 | Arabic | ||
| 14 | #904 | United States | English | |
| 15 | #914 | Brazil | Brazilian Portuguese | |
| 16 | #917 | Brazil | Brazilian Portuguese | |
| 17 | #961 | American English | ||
| 18 | #968 | Iran | Persian | |
| 19 | #1,000 | India | American English | |
| 20 |  appsflyer.com |
#1,019 | United States | American English |
📈 Usage Statistics
Most of the sites that use RSD:
- are located in the United States
- have content in English
- use the .com domain extension
- fall into the Business category.
Most of the sites using RSD are from the United States, Germany, and the United Kingdom.
- United States 20.6%
- Germany 6.4%
- United Kingdom 6.2%
- Japan 4.7%
- Spain 4.7%
- Italy 4.4%
- France 4.3%
- Australia 3.2%
- Netherlands 3.1%
- Other 42.4%
Most RSD users speak English, Spanish, or German.
- English 52.6%
- Spanish 6.6%
- German 6.2%
- French 4.4%
- Japanese 4%
- Italian 3.5%
- Portuguese 2.9%
- Dutch 2.4%
- Polish 1.8%
- Other 15.6%
RSD is especially popular on .com and .org top-level domains.
- .com 43.9%
- .org 7.6%
- .de 4%
- .net 2.8%
- .it 2.4%
- .co.uk 2.2%
- .com.au 1.9%
- .nl 1.8%
- .com.br 1.6%
- Other 31.8%
The primary market segments for websites utilizing RSD include business, marketing and merchandising, and blogs and wiki.
- Business 18.9%
- Marketing/Merchandising 11.4%
- Blogs/Wiki 10.5%
- Education/Reference 6.4%
- Internet Services 4.9%
- Entertainment 4.4%
- Travel 4.2%
- Health 3.8%
- Non-Profit/Advocacy/NGO 3.4%
- Other 32.1%
🕵️ Similar Technologies
These are some of the best RSD alternatives.
🆚 Compare Alternatives
Compare RSD to…
- 🕵️ Similar standards
- ⭐ Market leaders
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💬 Frequently Asked Questions
Where is RSD from?
RSD is from Wesley Hills, New York, United States.
Which country uses RSD the most?
The majority of RSD users are from the United States.
Who uses RSD?
According to our data, RSD is used on millions of sites, including en.wikipedia.org, oup.com, and
usercentrics.com.
Is RSD used on government websites?
Yes, for example, it is used by telangana.gov.in. Overall, we found RSD on 515 government sites in the United States.
Do academic institutions use RSD?
Yes, quite a few! In total, we know of 1,619 academic websites in the United States that use RSD.
How does RSD stack up against the competition?
RSD is a fairly popular standard, ranking ahead of 49 other standards we track.
What are the alternatives to RSD?
Alternatives and possible competitors to RSD may include RDF, 
XFN, and 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 4,046,772 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.