Kestrel
Microsoft, Redmond, Washington, United StatesKestrel is an open-source, cross-platform web server for ASP.NET Core that can serve HTTP requests on Windows, 
Linux, and macOS.
It uses an event-driven, high-performance architecture to handle many concurrent connections, supports HTTP/1.1, 
HTTP/2, HTTP/3, and 
WebSockets, provides HTTPS support, and integrates closely with the ASP.NET Core middleware pipeline and configuration system.
According to our data, Kestrel is the 8th most popular web server on the web.
It has 0.4% of the web server market share and is detected on 0.3% of all websites.
- 🏠 Website
- </> Source code
💸 Pricing
Kestrel is available for free.
📊 Rankings and Market Share
- Web Servers
- Rank: 8
- Market share: 0.4%
🏆 Kestrel Awards
- ⭐ 6th most popular in Turkey in the Web Servers category.
- ⭐ 7th most popular in the United States in the Web Servers category.
- ⭐ 7th most popular in China in the Web Servers category.
- ⭐ 8th most popular in the United Kingdom in the Web Servers category.
- ⭐ 8th most popular in Brazil in the Web Servers category.
- ⭐ 8th most popular in the Netherlands in the Web Servers category.
- ⭐ 8th most popular in Denmark in the Web Servers category.
- ⭐ 8th most popular in Sweden in the Web Servers category.
- ⭐ 8th most popular in Australia in the Web Servers category.
- ⭐ 8th most popular in Norway in the Web Servers category.
⚡ Sites Using Kestrel
We have data on 10,812 websites that use the Kestrel web server. Here is a list of some of the top ranked ones.
The highest rated site using Kestrel is msn.com.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | #30 | United States | American English | |
| 2 | #91 | United States | American English | |
| 3 | #205 | English | ||
| 4 | #253 | United States | American English | |
| 5 | #1,584 | Chile | Spanish | |
| 6 | #2,232 | Kazakhstan | Russian | |
| 7 | #2,685 | English | ||
| 8 | #2,710 | English | ||
| 9 | #3,006 | United States | English | |
| 10 | #4,242 | France | French | |
| 11 |  epic.com |
#6,152 | United States | English |
| 12 | #7,519 | Spain | English | |
| 13 | #8,516 | Brazil | Brazilian Portuguese | |
| 14 | #8,616 | United States | English | |
| 15 | #9,076 | United States | English | |
| 16 | English | |||
| 17 | #9,594 | United States | English | |
| 18 | #9,804 | Colombia | Spanish | |
| 19 | #9,960 | Singapore | Thai | |
| 20 | #10,290 | English |
📈 Usage Statistics
Most of the sites that use Kestrel:
- 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 Kestrel are from the United States.
- United States 61.7%
- United Kingdom 4.4%
- Brazil 2.6%
- Netherlands 2.5%
- China 2.4%
- Germany 1.8%
- Italy 1.3%
- Denmark 1.2%
- India 1.2%
- Other 20.9%
Most Kestrel users speak English or Chinese.
- English 73.6%
- Chinese 4.3%
- Portuguese 2.7%
- Spanish 1.8%
- German 1.7%
- Indonesian 1.5%
- Dutch 1.2%
- Turkish 1%
- French 1%
- Other 11.2%
The Kestrel web server is especially popular on .com top-level domains.
- .com 78%
- .net 3.3%
- .org 3.1%
- .co.uk 1.4%
- .com.br 1.4%
- .nl 0.7%
- .de 0.6%
- .se 0.6%
- .dk 0.6%
- Other 10.3%
The primary market segments for websites utilizing Kestrel include business, marketing and merchandising, and online shopping.
- Business 15.8%
- Marketing/Merchandising 9.2%
- Online Shopping 7.8%
- Blogs/Wiki 6.8%
- Motor Vehicles 5.7%
- Internet Services 5.1%
- Education/Reference 4.4%
- Software/Hardware 4.4%
- Travel 3.9%
- Other 36.9%
🕵️ Similar Technologies
These are some of the best Kestrel alternatives.
🆚 Compare Alternatives
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💬 Frequently Asked Questions
What is the company behind Kestrel?
Kestrel is owned by Microsoft Corporation, headquartered in Redmond, Washington, United States.
Is Kestrel free?
Yes, it is a free web server.
It is also open source, and you can find its source code on 
GitHub.
Which country uses Kestrel the most?
The majority of Kestrel users are from the United States.
Who uses Kestrel?
According to our data, Kestrel is used on thousands of sites, including such established ones as msn.com,
cloud.microsoft, and
xbox.com.
Is Kestrel used on government websites?
Overall, we found Kestrel on 3 government sites in the United States.
Do academic institutions use Kestrel?
Yes. The most notable of these is dukeupress.edu. In total, we know of 2 academic websites in the United States that use Kestrel.
How does Kestrel compare to the competition?
Kestrel is a fairly popular web server, ranking ahead of 32 other web servers we track.
What are the alternatives to Kestrel?
Alternatives and possible competitors to Kestrel may include Microsoft IIS, 
Nginx, and 
Tomcat.
👉 See Also
- ✨ Related technologies
- 💼 All technologies from Microsoft
🗃️ 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 3,814,833 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.