Vinbero is a modular server written in C, and its main goal is flexibility. Its core is very small; It just loads children modules, initializes them, calls callbacks on them and destroys them. Currently multithreading, tcp, epoll, tls, http, lua modules exist. So you can try it as a simple web application server with lua scripting. But if you write and add your own module, it could be even used as a mailserver, chatserver or gameserver.