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.
Adie is an extremely fast and convenient programming text editor written using the FOX Toolkit. It also acts as a convenient file viewer, supporting several methods to move from one file to the next. For each visited file, it remembers where in that file you were last looking, and which special places in that file have been bookmarked, so you can quickly return to frequently visited places. Project browsing is made easy by optionally displaying a File/Directory browser side by side with the text, so files may be visited by means of a single click.
Advanced Web Ranking is a tool that will help you check your Web site position on all major search engines. It saves you hours of tedious work while monitoring your Web site's search engine position. It generates tabular and graphical reports that will help you check not just the position of your Web site, but the position of your competitors' Web sites as well.
Advisory Check is a program that reads security advisories for you. It gathers security advisories using RSS, RDF, or XML feeds, compares them against the installed software, and alerts you if you're vulnerable. A wide variety of package managers can be queried to detect installed software. Remote systems can be monitored by using the integrated SSH, Windows-RPC, and Nmap support.
AePro is a compilation manager for programs written in progres4gl. It compares modification times and will only (re)compile the programs whose source code has changed. It is intended to be used in combination with Aegis, a transaction-based software configuration management system that provides a framework within which a team of developers may work on many changes to a program independently.