OpenLiteSpeed is an open-source web server developed by LiteSpeed Technologies. It is known for its high performance, security features, and ease of management. OpenLiteSpeed is suitable for a variety of web applications and can handle high traffic with minimal resource usage.
- Current stable: OpenLiteSpeed 1.8.5 (2025-01-08).
- Release notes: HTTP/2 header fixes, BCRYPT password hashing, lsquic v4.4.1 update.
- High-performance hosting with a web UI.
- WordPress and PHP apps (LSAPI).
- Users who want Apache-compatible
.htaccess support.
- HTTP/3 (QUIC) deployments.
- High Performance: Optimized for speed and efficiency, capable of handling thousands of concurrent connections.
- HTTP/3 (QUIC): Native HTTP/3 support with lsquic library for reduced latency.
- HTTP/2: Full HTTP/2 support with server push capabilities.
- Security: Built-in anti-DDoS features, mod_security compatibility, and SSL/TLS support.
- Easy Management: User-friendly web-based GUI for server management and configuration.
- Compatibility: Supports Apache rewrite rules, .htaccess, and mod_security.
- LSAPI: LiteSpeed SAPI for optimized PHP processing.
- Scalability: Suitable for small to large-scale websites and applications.
- Caching: Built-in caching mechanisms for improved performance.
- C++ (67.0%)
- C (19.2%)
- Additional: Makefile, Shell, HTML, Go
- ✅ Actively maintained - Recent release (Jan 2025)
- ✅ Official Docker image -
litespeedtech/openlitespeed (500K+ pulls)
- 🔧 HTTP/3/QUIC support - Production-ready implementation
- 📦 Repository available - Debian/Ubuntu, RHEL/CentOS (via LiteSpeed repo)
- 🖥️ Web admin UI - User-friendly management interface
- 🔐 BCRYPT passwords - Secure password hashing (v1.8.5+)
¶ History and References