nginx is an HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server. Nginx was written with an explicit goal of provide high performance on sites with high traffic, so it can be used as a reverse proxy, load balancer and HTTP cache.
GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.
dperf is a 100Gbps network load tester.
An online request replication and TCP stream replay tool, ideal for real testing, performance testing, stability testing, stress testing, load testing, smoke testing, and more.
Nginx virtual host traffic status module
A media streaming server based on nginx-rtmp-module. In addtion to the features nginx-rtmp-module provides, HTTP-FLV, GOP cache, VHosts (one IP for multi domain names) and JSON style statistics are supported now.
A forward proxy module for CONNECT request handling
Handy, High performance, ModSecurity compatible Nginx firewall module & 方便、高性能、兼容 ModSecurity 的 Nginx 防火墙模块
Angie - drop-in replacement for Nginx
A curated list of awesome Nginx distributions, 3rd party modules, Active developers, etc. 
Yet another fast and efficient HTTP server
High-performance Distributed Storage
An embeddable fulltext search engine. Groonga is the successor project to Senna.
Web security protection system based on openresty
Created by Igor Sysoev
Released October 4, 2004