WEBrick is a Ruby library providing simple HTTP web servers. WEBrick was primarily written by Masayoshi Takahashi and Yuuzou Gotou, with contributions from other developers via the open-source model of software development. It uses basic access authentication and digest access authentication for different kinds of servers that it can create - HTTP based server, HTTPS server, proxy server and virtual-host server. Construction of several non-HTTP servers such as the Day Time Server which uses the Daytime Protocol rather than the HTTP is also facilitated by WEBrick. It is used by the Ruby on Rails and Padrino frameworks to test applications in a development environment as well as production mode for small loads. It is now a part of Ruby standard library.