Config::Natural is a Perl module that can read generic configuration files with a simple but very flexible syntax. It has very few constraints on the data, and has support for multi-line values and nested lists. Its object oriented API is compatible with modules like CGI or HTML::Template, and it can be safely associated with the latter.
Pipo-BBS allows you to install a BBS server and clients. You can chat via a nice interface with an unlimited number of people (as with IRC). This software is in a pre-release state; it is still very alpha, and can be difficult to even compile. It works under linux, MkLinux, SGI, HP-UX, and Solaris. The only interface for this BBS is telnet for the moment; an interface using GTK has been started. It has been translated into French, English, Spanish and German.
Html2Wml converts HTML pages to WML pages, suitable for being viewed on a Wap device. The conversion can be done either on the command line to create static WML pages or on-the-fly by calling this program as a CGI. Html2Wml's most interesting features are: automatic deck splitting, links reconstruction, and WML compilation.