Higgs.IO is a high performance, message oriented network library built for realtime systems. It provides a core extensible framework and libraries built on top of the core. Libraries include a WebSocket server, an HTTP server and client, and Boson, a custom serialization and RMI library.
ashttpd was originally a testbed for a kernel async-sendfile patch. Today, it's just another Web server for serving static content rapidly. It differs from its competitors by storing its webroot in a database, which provides a 50% performance increase over using the operating system's VFS. It also allows precalculation of strong cache-validators (ETags).
DeleGate is a multi-purpose application level gateway or proxy server that mediates communication of various protocols, applying cache and conversion for mediated data, controlling access from clients, and routing toward servers. It translates protocols between clients and servers, converting between IPv4 and IPv6, applying SSL (TLS) to arbitrary protocols, merging several servers into a single server view with aliasing and filtering. It can be used as a simple origin server for some protocols (HTTP, FTP, and NNTP).
Roxen WebServer is a complete Web server. It is platform-independent, modular, and features a version with strong 128/168-bit encryption. Add-on products for information retrieval, visitor behavior analysis, and powerful tools for application development offering connectivity to databases are available. Altogether the Roxen Platform is a secure Web-based workgroup solution for time and cost-efficient content and Web site management.
CPPSERV is a Web application server / servlet container that provides a Servlet-like API to C++. It also contains CSP (C++ Server Pages) functionality, similar to pre-compiled JSP. It consists of stand-alone application server and Web server front-ends. Modules for Apache and lighttpd are available.
mod_ssl provides provides strong cryptography for the Apache 1.3 webserver via the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1). It is based on the SSL/TLS toolkit OpenSSL and supports all SSL/TLS related functionality, including RSA and DSA/DH cipher support, X.509 CRL checking, etc. Additionally it provides special Apache related facilities like DBM and shared memory based inter-process SSL session caching. per-URL SSL session renegotiations, DSO support, etc.
mod-xslt is an Apache module which converts XML files into HTML files using XSLT stylesheets. It is able to parse dynamically-generated documents, both in POST and GET requests, includes a fully-featured language to choose the stylesheet to load from both configuration files and other .xml files, and provides extensions so stylesheets can access headers or get variables. It also supports redirects and dynamically-generated stylesheets.