JasonEnvironments delivers a collection of environment modules designed specifically for the Jason multi-agent system. Each module exposes a standardized interface so agents can perceive, act, and interact within diverse scenarios like pursuit-evasion, resource foraging, and cooperative tasks. The library is easy to integrate into existing Jason projects: just include the JAR, configure the desired environment in your agent architecture file, and launch the simulation. Developers can also extend or customize parameters and rules to tailor the environment to their research or educational needs.

Mean-Field MARL provides a robust Python framework for implementing and evaluating mean-field multi-agent reinforcement learning algorithms. It approximates large-scale agent interactions by modeling the average effect of neighboring agents via mean-field Q-learning. The library includes environment wrappers, agent policy modules, training loops, and evaluation metrics, enabling scalable training across hundreds of agents. Built on PyTorch for GPU acceleration, it supports customizable environments like Particle World and Gridworld. Modular design allows easy extension with new algorithms, while built-in logging and Matplotlib-based visualization tools track rewards, loss curves, and mean-field distributions. Example scripts and documentation guide users through setup, experiment configuration, and result analysis, making it ideal for both research and prototyping of large-scale multi-agent systems.