G-WAN vs Nginx
Both G-WAN (freeware) and Nginx (open-source) are asynchronous HTTP servers for Linux and Windows. Both intend to be "light" and "fast". The Nginx project started in 2004 while G-WAN started in 2009. Using a different design based on threads and events, G-WAN is lighter and faster than the mainstream servers, a fact independently verified by several third-party benchmarks over the years. While other servers rarely publish comparative benchmarks, GWAN Benchmarks (here vs Nginx and others) are driving its development as the author's goal is to "harness the parallel processing power of the ever increasing number of cores available on each chip". To advance the cause of reproductible research, G-WAN documents all its tests and provides public-domain C source code.