3Delight is a very fast RenderMan-compliant renderer designed to produce photorealistic images for serious production environments. Some of its features include ray tracing, global illumination, motion blur, depth of field, subdivision surfaces, programmable shaders, quality antialiasing, and antialiased multi-depth shadow maps. The API and the shading language are very similar to what is described in the RenderMan interface documentation.
Abyss Web Server X1 is a personal Web server. Despite its small footprint, it supports secure SSL connections (HTTPS), CGI/FastCGI, ISAPI extensions, server-side includes (SSI), download resuming, caching negotiation, logging, custom error pages, password protection, IP address control, URL rewriting, aliases, custom MIME types, index files, custom directory listings, anti-leeching, and bandwidth throttling. It also features an automatic anti-hacking system and an intuitive multilingual remote Web management interface.
Acovel is a cross-platform media player (currently running on Linux and Windows). It features an intelligent algorithm that will analyze both ID3 (v1 ahd v2) tags and filenames to fill up its music collection database. Its search feature is very fast. It is currently limited to playing albums, but upcoming versions will make it a full-featured media player.
Acrony is an online multiplayer word game that you can play either through your browser (any OS with Shockwave) or a Windows/Wine executable. The game consists of making the most entertaining phrase that matches a provided acronym, and then voting on who did the best job of it. An example for “F.B.A.” might be “Free Beer Anyone?” Integrated features include chat, a forum, user stats, and more.