MadKit
MadKit is a modular and scalable multiagent platform written in Java and built upon the AGR (Agent/Group/Role) organizational model: agents are situated in groups and play roles. MadKit allows high heterogeneity in agent architectures and communication languages, and various customizations.
Warbot
Warbot is a multi-agent architecture that aims at testing coordination strategies in a real-time strategy game. The game consists in a competition between two robot teams that attempt to defend their base, while attacking the opponent base.