DNS Module for AOLserver is a module that implements a DNS server and proxy. It can serve from its own database or perform forwarding to another DNS server and cache results. The server doesn't support a database directly, instead it provides commands similar to 'route add|del' to add and remove DNS records to/from memory cache.
connect-tunnel is a simple Perl script that lets you tunnel anything through a CONNECT-aware HTTP proxy. It supports multiple tunnels and multiple connections to those tunnels, and all of the authentication methods that libwww-perl supports (Basic, Digest, and NTLM). It works under Unix and Windows.
Super Proxy System (SPS) is a proxy server that helps you to fill in forms that you may encounter when reading news articles (such as those in the New York Times) or when downloading trial software. Instead of creating fake usernames and details, you can input such shortcuts as \1, \2, and \e and the proxy will substitute them with random strings. When users return to a site, a new button that automatically submits the same data as the previous visit appears on the page. It is always possible to input new data. The program could also be used as a starting point for developing proxy-like tools.
Wodan is an Apache module for reverse proxying and caching of sites. It allows the backend server to determine how pages should be cached through a custom HTTP header, which makes it very flexible. It caches on the local filesystem, which makes it very easy to create custom purging systems. Expiration of cachefiles is also supported, as well as no-caching options.
The Gordano Messaging Suite (GMS) is a highly flexible and reliable suite of messaging products. Customers can choose which components meet their needs from email, Webmail, collaboration, instant messaging, calendaring, SMS, and list server software all of which can be complimented by high level anti-spam, anti-virus, and archiving options.