ARSCIF is a powerful framework that makes it trivial to use asynchronous remote-script callback invocation (AJAX) techniques. It helps the developer by working out problems such as data and character encoding, concurrency control, browser implementations, and so on, allowing the creation of pages with sophisticated, dynamic features.
Address Book Continued is a multi-user address book Web application. It also makes use of AJAX, which means that page reloads only happen on login/logout; the rest of the operations is handled asynchronously in the background. It's well usable, even over slow connections. You can even install ABC on your desktop PC and configure it so that it doesn't require login for connections coming from the local computer.
Aranha is a piece of software written to allow Web applications to be written more cleanly and more easily. It is a Local FastCGI Responder, although work is in progress to allow it to work as a FastCGI Authoriser and a FastCGI Filter. It is based on the programming language Lua, and contains many extensions to enable easy Web site development and maintenance.
The Atom Publishing Protocol framework for Ruby aims to simplify the implementation of Atom Publishing Protocol (APP) support in Web applications. It achieves this by implementing a framework that handles the protocol-level duties for the programmer, while not making any requirements for the site design.
AutoScrapbook helps automate the creation and maintenance of an online photo gallery. It creates the thumbnails and Web pages for you by asking you for descriptions of the pictures. It works best when run under Linux and within X (for picture viewing), but you could use it through only a terminal and a separate browser if necessary. It can optionally allow you to delete, rename, and rotate images during the description process. It can also use the programs exif, exiftags, and/or jhead to access EXIF data from the images and/or store descriptions within the JPEG header. Note that this program creates a static Web site around existing images, using the existing directory structure as the heirarchy for the Web site.
CGILua is a tool for developing dynamic HTML pages and manipulating input data from forms. It uses the interpreted language Lua for codifying its scripts. It has been on the road for almost 8 years now, being used in many Web products and sites. It is extensible through Lua libraries and dynamic loading of C/C++ libraries. Scripts can be written as Lua programs or HTML templates (HTML with Lua code embedded). Scripts are platform-independent.