nginx ("engine x") is an HTTP web server, reverse proxy, content cache, load balancer, TCP/UDP proxy server, and mail proxy server.


nuster is described as 'High performance HTTP proxy cache server and RESTful NoSQL cache server based on HAProxy. It is 100% compatible with HAProxy, and takes full advantage of the ACL functionality of HAProxy to provide fine-grained caching policy based on the content of request, response' and is an app in the network & admin category. There are six alternatives to nuster for a variety of platforms, including Linux, Mac, Windows, Self-Hosted and FreeBSD apps. The best nuster alternative is nginx, which is both free and Open Source. Other great apps like nuster are Squid, Varnish, CivetWeb and freenginx.
nginx ("engine x") is an HTTP web server, reverse proxy, content cache, load balancer, TCP/UDP proxy server, and mail proxy server.


Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator.


CivetWeb is an easy to use, powerful, C/C++ embeddable web server with optional CGI, SSL and Lua support.
Formerly a commercial product, Yahoo! donated it to the Apache Foundation, and it is now an Apache TLP.