Comparison of LiteSpeed Web Server Editions


  • Large, high-traffic sites
  • No hosting control panel compatibility
  • Apache-compatible rewrite rules
  • Access to cutting edge features
  • Unlimited worker processes
  • Third-party API hooks
  • Built-in page caching

Open source and free for personal and commercial uses

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LSWS Standard

  • Small, low traffic sites
  • Hosting control panel compatible
  • Apache compatible
  • Limited to 5 Apache virtual hosts
  • 1 worker process
  • 150 concurrent connection limit
  • Use with hosting control panel plugins not supported

Free for personal and commercial uses

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LSWS Enterprise

  • Large, high-traffic sites
  • Hosting control panel compatible
  • Fully Apache compatible
  • Supported by cPanel and integrated into DirectAdmin
  • Highest level of stability
  • Ideal for shared hosting providers
  • Number of worker processes based on license
  • Page caching available

Choosing a License

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LiteSpeed Tech professional staff provide free support to LSWS customers through our forum and free support to OpenLiteSpeed community through our Google Group.

Detailed feature comparison

Basic Features
HTTP 1.0/1.1 compliant Yes Yes Yes
HTTP/2 support Yes Yes Yes
Languages: PHP, Perl, Ruby, Python, JSP, etc.. Yes Yes Yes
SAPIs: LiteSpeed API, CGI, FCGI, AJPv13, Proxy Yes Yes Yes
HTTPS Yes Yes Yes
IPv4 and IPv6 Yes Yes Yes
Unlimited IP and name-based virtual hosting Yes Yes Yes
GZIP compression Yes Yes Yes
SPDY2/3, WebSocket Yes Yes Yes
Runs on Linux, FreeBSD, MacOSX, Solaris Yes Yes Yes
Apache Compatibility
Apache mod_rewrite rules Yes Yes Yes
Apache mod_security rules   Yes Yes
Reads Apache's configuration files directly   Yes Yes
Hosting control panel compatible   5 Apache VHosts Yes
Full .htaccess support   Yes Yes
Performance & Scalability
Event-Driven Architecture Yes Yes Yes
Concurrent connections Unlimited Restricted to 150 Unlimited*
Tiny memory footprint Yes Yes Yes
Sendfile() Yes Yes Yes
LiteSpeed's exclusive server API (LSAPI) Yes Yes Yes
Separation of server and web applications Yes Yes Yes
SPDY support Yes Yes Yes
Advanced .htaccess caching   Yes Yes
Built-in page caching     Yes*
ESI support     Yes
Asynchronous I/O support     Yes
CloudLinux compatibility     Yes
Anti-DDoS connection and bandwidth throttling Yes Yes Yes
Anti SSL BEAST and negotiation attack capabilities Yes Yes Yes
Strict HTTP request validation Yes Yes Yes
Denies buffer-overrun attempts Yes Yes Yes
mod_security compatibility   Yes Yes
SSL client verification Yes   Yes
SSL hardware acceleration Yes   Yes
CloudLinux CageFS compatibility     Yes
chroot ability     Yes
High Availability
Apply changes with zero downtime Yes Yes Yes
Zero downtime server software upgrade Yes Yes Yes
Recovers from service failure instantly Yes Yes Yes
Ease of Use
Intuitive WebAdmin console GUI Yes Yes Yes
Virtual host templates for easy configuration Yes Yes Yes
Real-time service monitoring Yes Yes Yes
Version management   Yes Yes
Hosting control panel plugins     Yes
Supported by cPanel     Yes
Integrated into DirectAdmin     Yes
Advanced Features
Easily run multiple versions of PHP on one server Yes Yes Yes
mp4/flv streaming Yes Yes Yes
Stream logs to external logger Yes Yes Yes
MS FrontPage Server Extensions     Yes
Geo-IP lookup Yes   Yes
Rails shared hosting     Yes
Custom log formatting Yes   Yes

Hover over items with an asterisk (*) to show explanation.