🆚 LiteSpeed Web Server vs. Microsoft IIS
- 📈 LiteSpeed Web Server is three times more popular than Microsoft IIS.
- 🌎 LiteSpeed Web Server is more popular in the United States, the United Kingdom, and Australia.
- 🌍 Microsoft IIS is more popular in Italy, China, and the Czech Republic.
LiteSpeed Web ServerType
About
LiteSpeed Web Server is a high-performance commercial web server that can operate as a drop-in replacement for 
Apache, using the same configuration files and control panel integrations.
It uses an event-driven architecture to handle thousands of concurrent connections with low resource usage, supports 
HTTP/2, HTTP/3, and 
QUIC, includes built-in server-level caching through 
LSCache, and provides security features such as anti-DDoS protection and ModSecurity compatibility.
Microsoft Internet Information Services (IIS) is an extensible web server developed by Microsoft for 
Windows systems.
It has a modular architecture with standalone components, supports HTTP, HTTP/2, HTTP/3, HTTPS, FTP, FTPS, SMTP, and NNTP protocols, enables worker process isolation through application pools, and provides native integration with ASP.NET and ASP.NET Core.
Headquarters
Pricing
(1 domain, up to 2GB RAM)Free ✔️
(5 domains, up to 8GB RAM)$10/month
(5 domains, unlimited RAM)$16/month
Categories
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
- 🥇 Most popular in Australia in the Web Servers category.
- 🥇 Most popular in Indonesia in the Web Servers category.
- 🥇 Most popular in Turkey in the Web Servers category.
- 🥇 Most popular in Vietnam in the Web Servers category.
- 🥇 Most popular in Romania in the Web Servers category.
- 🥇 Most popular in Brunei Darussalam in the Web Servers category.
- 🥈 Second most popular in China in the Web Servers category.
- 🥈 Second most popular in Turkey in the Web Servers category.
- 🥈 Second most popular in Cambodia in the Web Servers category.
- 🥉 Third most popular in Italy in the Web Servers 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.
Nginx
OpenResty
Tomcat
Caddy🗃️ 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 3,367,747 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.