NS MilMan is intentded to be used to keep track of ones military for roleplaying in NationStates (www.nationstates.net) Platforms: Windows, Mac, Linux

An advanced calculator for the popular webgame nationstates. This script, written in php, html and css, will borrow from other already established scripts and will contain many new script features derived from previous scripts. Platforms: Windows, Mac, Linux

nhtsclient is a ncurses-based client for the realtime multiplayer trading game Holsham Traders Platforms: Windows, Mac, Linux

A free, open source, artificial life, genetic evolution simulation in which small creatures called Neds roam the world, mate with one another, harvest food, eat and eventually die. Platforms: Windows, Mac, Linux

Noble Ape Simulation creates a random island environment and simulates the ape inhabitants of the island's cognitive processes. The Simulation is open source and features the Ocelot landscape rendering engine and the scripting language, ApeScript. Platforms: Mac

Keyword: Carbon, Dynamic Modelling, Environmental Model, Environmental Simulation, Free Software, Game, Global Simulation, High Schools, Mac Os X, Philosophy, Platform Non-specific, Programming, Source Code, Sse, The Noble Ape Nation, Tom Barbalet, Tropical Ecosystems, Virtual Reality Software, Windows

Ocean Empire is a reimplementation of the famous DOS-game Ocean Trader. Though it is not completely identical to Ocean Trader, it will have many more options, which offer more game features to the user. Platforms: Windows, Mac, Linux

Second Life is a 3-D virtual world entirely built and owned by its residents. Platforms: Windows, Mac, Linux

An open source implementation of the Distributed Interactive Simulation (IEEE-1278) standard in C++, C-Sharp, Objective-C, and Java. Platforms: Windows, BSD, Mac, Linux

OpenGC is a cross-platform, simulator independent, glass cockpit software toolkit for home cockpit builders. Platforms: Windows, Mac, Linux

OpenBaseball will be a text-based baseball simulation using real data of baseball players. I hope to make the game statistically accurate in reproducing past seasons. I want it to be as statistically accurate as Diamond Mind Baseball. Platforms: Windows, Mac, Linux

OpenPatrician is a free implementation in Java of Ascaron's classic The Patrician and The Patrician 2. The game is economic simulation located in the European North- and East-Sea in the late middle age. Platforms: Windows, BSD, Mac, Linux

An effort to create free and open enviroment, to build complex 'rail world', including all rail technology lovers' interests - locomotives (steam, diesel, electric) - driving or documentation, physics, traffic control, etc. Platforms: Windows, Mac, Linux

OpenRock Curling is a free curling game with network support.It is written in Java and should run all platforms with JRE 6 or later. Platforms: Windows, Mac, Linux

ORSA is an interactive tool for scientific grade Celestial Mechanics computations. Asteroids, comets, artificial satellites, Solar and extra-Solar planetary systems can be accurately reproduced, simulated, and analyzed. Platforms: Windows, BSD, Mac, Linux

OSX SkyFighters 1945 is a WWII flight sim that features quick dogfights, mission play, online play and a Mission Builder.Fly against computer AI aircraft, or against others over a network. (No extra charge for network play.) Create custom paint jobs for your aircraft. Platforms: Mac

Keyword: Demo, Free, Freecell, Game, Imac, Internet, Mac, Macintosh, Osx, Tankfighters, Video Poker Cocoa

Outguard is a multi-player starship combat simulator built on OpenGL. Platforms: Windows, BSD, Mac, Linux

--- DEVELOPMENT HAS ENDED (but program is still maintained). -- --- GAME PLAY WAS NEVER COMPLETED. -- Can play a basic land-on-the-carrier mission. It renders an F-14 Tomcat and other aircraft with shaders. This was an arcade/action sim for UNIX systems only. Requires OpenSceneGraph. Optional:... Platforms: BSD, Mac, Linux

PATHy is a Mac flight planner for simulator purposes. Plan your IFR and VFR flights, get distance, trip time and fuel consumption data,altitude profile, peek at the 13'000+ airports, more than 11000 navaids (VOR, NDB and ILS) and over 10000 fix points. Platforms: Mac

Keyword: C C++, Custom, Database, Development, Easy To Learn, Individual, Java, Non-bloat, Php, Reduced To The Core, Sleek, Software, Sql, Systems, Vb Rb

PeaceMaker challenges you to succeed as a leader where others have failed. Experience the joy of winning the Nobel Prize or the agony of plunging the Middle East into disaster. PeaceMaker will test your skills, assumptions and prior knowledge. Play it and you will never read the news the same way... Platforms: Mac

A world of alife based on Physis, inspirated by Avida, written in java. Distributed research platform for evolution experiments. Platforms: Windows, Mac, Linux