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 detected on 29.8% of all websites.
📊 Rankings and Market Share
- Standards
- Rank: 6
- Market share: 32.9%
🏆 RSD Awards
- 🥉 Third most popular in Bhutan in the Standards category.
- 🥉 Third most popular in Libya in the Standards category.
- ⭐ 4th most popular in Bulgaria in the Standards category.
- ⭐ 4th most popular in Lithuania in the Standards category.
- ⭐ 4th most popular in Macedonia in the Standards category.
- ⭐ 4th most popular in Nepal in the Standards category.
- ⭐ 4th most popular in Uganda in the Standards category.
- ⭐ 4th most popular in Afghanistan in the Standards category.
- ⭐ 4th most popular in El Salvador in the Standards category.
- ⭐ 4th most popular in Tajikistan in the Standards category.
⚡ Sites Using RSD
We have data on 1,141,411 websites that use RSD. Here is a list of some of the top ranked ones.
The highest rated site using RSD is 
wordpress.com.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | wordpress.com |
#83 | United States | English |
| 2 |  en.wikipedia.org |
United States | English | |
| 3 | #228 | American English | ||
| 4 | #310 | United States | English | |
| 5 | #365 | United States | American English | |
| 6 | #447 | American English | ||
| 7 | #556 | United States | American English | |
| 8 | #590 | United Kingdom | British English | |
| 9 | #708 | Dominican Republic | American English | |
| 10 | #822 | United States | English | |
| 11 | #832 | Vietnam | Vietnamese | |
| 12 | #857 | American English | ||
| 13 | #939 | Arabic | ||
| 14 | #959 | English | ||
| 15 | #963 | India | American English | |
| 16 | #964 | United Kingdom | British English | |
| 17 | #968 | India | American English | |
| 18 | #971 | American English | ||
| 19 | #984 | Brazil | Brazilian Portuguese | |
| 20 | #1,011 | 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, the United Kingdom, and Germany.
- United States 20.8%
- United Kingdom 6.4%
- Germany 6.3%
- Spain 4.7%
- Japan 4.7%
- Italy 4.4%
- France 4.3%
- Netherlands 3.2%
- Australia 3.2%
- Other 42%
Most RSD users speak English, Spanish, or German.
- English 52.5%
- Spanish 6.7%
- German 6.3%
- French 4.4%
- Japanese 4%
- Italian 3.6%
- Portuguese 2.9%
- Dutch 2.4%
- Polish 1.8%
- Other 15.4%
RSD is especially popular on .com and .org top-level domains.
- .com 43.6%
- .org 7.7%
- .de 4.1%
- .net 2.8%
- .it 2.5%
- .co.uk 2.2%
- .nl 1.9%
- .com.au 1.9%
- .fr 1.6%
- Other 31.7%
The primary market segments for websites utilizing RSD include business, marketing and merchandising, and blogs and wiki.
- Business 19%
- Marketing/Merchandising 11.4%
- Blogs/Wiki 10.4%
- Education/Reference 6.4%
- Internet Services 4.9%
- Entertainment 4.4%
- Online Shopping 4.4%
- Travel 4.3%
- Health 3.8%
- Other 31%
🕵️ Similar Technologies
These are some of the best RSD alternatives.
🆚 Compare Alternatives
Compare RSD to…
- 🕵️ Similar standards
- ⭐ Market leaders
- 💡 More alternatives
- 🔎 All options
💬 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 wordpress.com, en.wikipedia.org, and cnet.com.
Is RSD used on government websites?
Overall, we found RSD on 502 government sites in the United States.
Do academic institutions use RSD?
Yes, quite a few! In total, we know of 1,590 academic websites in the United States that use RSD.
How does RSD compare to the competition?
RSD is a very popular standard, second only to 5 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 3,824,319 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.