CGI::ContactForm is a Perl module that generates a contact form for the Web and sends a message to a predestinated recipient. Unlike many form-to-mail programs, it's limited to this single purpose, but it allows you to set up a decently designed form with a minimum of effort. In other words, it's simple to use rather than flexible, even if there are quite a few customization possibilities.
libscgi is a library offering a useful API for SCGI client programs written in C. The library additionally comes with a small SCGI server used for relying the incoming connections from the HTTP server to the client application. It allows writting SCGI based persistent Web applications in C. It is part of ASNlibs.
faceservice.cgi is a CGI program for detecting faces on the Web. You can post an image or an image URL to it, and the program will respond to you with the locations of the faces it has found. faceservice uses the OpenCV library to do the actual detection, libcurl for downloading of images, and libcgicc for the CGI interfacing. It has only been tested to work on Linux.
Gutuma is a feature rich PHP newsletter/mailing list management tool that is designed to be easy to install and use. It doesn't require a database, yet offers multiple lists, import and export from CSV, file attachments, drafts, AJAX subscribe gadgets, administrator email notifications, MD5 protected logins, and batched deliveries that can be driven by a cron job.
eval2 is a real-time evaluator for PHP. It is designed to be a debugging tool. Code is executed server-side as the user types and results are returned via AJAX. It comes with a limited textarea WYSIWYG code editor with tab, shift-tab indentation, and a GUI MySQL browser. It requires Firefox.
fastcgi++ is a C++ library for developing Web applications in C++ with the FastCGI protocol. This library does not support the old CGI protocol. It effectively manages simultaneous requests without the need for multiple threads. Session data is organized into meaningful data types as opposed to a series of text strings. Internationalization and Unicode support is another priority. The library is templated to allow internal wide character use, while converting down to UTF-8 upon transmission to the client.
PyWebLib is a Web programming framework for Python. The module package pyweblib consists of several submodules, including a pyweblib.forms class library for handling input, pyweblib.session for server-side Web session handling, pyweblib.sslenv to retrieve SSL-related environment variables, and pyweblib.httphelper for very basic HTTP functions/classes.
Zeitleiste is a time line program written for the German conworlders community. As such it has to be more flexible than similar history programs, which set their main focus on Earth. It could be helpful to authors in the phantastic genre in general. It features a fully customizable template, free date definitions, freeform party relations, freeform place relations, and freely definable event categories.