Pylons is a modern web framework that was written in the Python programming language and follows the model-view-controller design pattern.

Squid is a free implementation of a proxy server that also caches contents, which provides a benefit in terms of speed.

Apache Tomcat is an application server that can run Java code on web servers.

The Apache HTTP server is a free web server. Apache is one of the world’s most commonly used web servers.

Django is a web framework that was written in the Python programming language and follows the model-view-controller design pattern.

HAProxy is an Open Source proxy application for TCP and HTTP-based applications, and also provides a highly available load balancer.

nginx is a powerful web server and reverse proxy server.