OpenLiteSpeed - High performance, lightweight, HTTP server

OpenLiteSpeed is a high-performance, lightweight, open source HTTP server developed and copyrighted by LiteSpeed Technologies. It is event driven and it can handle hundreds of thousands of concurrent connections without load spikes.

Its feature include:

• WebAdmin GUI with real-time statistics.
• Rewrite engine uses Apache mod_rewrite syntax.
• High-performance page caching.
• Gzip compression for reduced bandwidth use.
• HTTPS up to 4x faster than Apache.
• Supports PHP, Ruby, Python, Perl, and Java external applications.
• Buffers requests and responses to external applications to more efficiently serve multiple connections.
• Apache-compatible SSI support.
• Bandwidth and connection throttling.
• Chunked transfer encoding.
• IPv4 and IPv6 support.
• Load balancing.
• WebSocket proxy support.
• mp4 and flv streaming.
• Easy virtual host configuration via templates.
• Can serve as a reverse proxy to accelerate static content delivery, compress throughput, or run security.