SMM++ Mud Client is a mud client with extended and unique features. Aside from all standard mud client functionality like ANSI color support, aliases, action triggers, and tab-completion, SMM++ features a highly-customizable user interface (labels, buttons, and menus) and unique and powerful mapping capabilities, and SMM++ is the only mapping crossplatform (Tcl/Tk based) mud client available.
Vendetta Online is a multi-platform 3D space-combat MMO for Windows, Mac, Linux/32 and Linux/64. The game permits players to interact in a vast online galaxy; fighting, trading, and mining their way to success. A "twitch" type real-time combat model makes true player skill the deciding factor instead of character advancement. Massive capital-ship battles shake the foundations of the major nations at war, while others struggle to push back the encroachment of the AI "Hives". A no-strings free trial is available.
GEAS (Group Editing and Authoring System) provides a Web portal for a group of people to work on a set of documents together. It is optimized for RPG communication (campaign background, between-session summaries and details, online gaming) but is useful for any group that needs to manage an evolving collection of shared documents. It supports multiple forums (i.e. campaigns) managed by moderators (i.e. GMs) with a flexible yet intuitive privileges model that enables users (i.e. players) to safely view, add, and edit content. It is based on a MySQL and Perl backend.
Quantum Star SE is a browser-based space strategy and trading game played across a mapped galaxy against other players. Utilizing mining, trading, research, and production through easy-to-use tools, QS enables both broad micro-management of resources or more "aggregated" methods. Players compete, combat enemy fleets, and manage planets to become the "last man standing". No user downloads are required, and the game is free to host or play.
Nethack Records is an on-demand statistics generator for Nethack that is meant to be run on a Web server. It has several types of statistics, ranging from character info to daily and weekly stats. It is implemented with a modern template system, and is very customizable. One can sort by most field-types, such as character class or gender. The code is separated from the XHTML by means of HTML::Template. CSS is utilized to its fullest extent, allowing you to make it look however you like, without knowing Perl.