mod_auth_openid is an authentication module for the Apache 2 Web server. It handles the functions of an OpenID consumer as specified in the OpenID 2.0 specification. Once installed, a simple configuration directive can secure a directory or application on your Web server and require a valid OpenID/XRI identity. You can configure trusted/untrusted identity providers along with a number of other options.
muhttpd (mu HTTP deamon) is a simple but complete Web server written in portable ANSI C. It supports static pages, CGI scripts, and MIME type based handlers. It drops privileges before accepting any connections, and can log received requests. It has been tested on OpenBSD, GNU/Linux, NetBSD, FreeBSD, Mac OS X, and Cygwin. It runs successfully on 32-bits, 64-bit, little endian, and big endian systems.
cpt aims to be running in front of any HTTPS server. It forwards all requests that don't call for a "CONNECT .." to the normal HTTPS server. There is no error handling for mistaken requests; they go straight to the default server. A request that doesn't pass the conditions is passed forward too, and the Web server will handle it (with the default error page). Users should be unaware that cpt is running as a proxy.
Concrete5 is a content management system (CMS) that can manage Web applications, Web sites, stores, and forums. It allows individuals involved with Web sites to easily manage their content and their site structure. Concrete5's in-context editing is like working with a wiki, and the extendable block support makes editing and extending unique Web sites easy. The goal behind Concrete5 was always to create a toolset that could be used by anyone with basic computer skills to edit and add pages to a Web site.