Open-source projects play a crucial role in promoting ethical AI development. By making models, algorithms, and datasets openly accessible, they ensure transparency, enabling researchers and developers to audit, verify, and improve systems collaboratively. This openness fosters reproducibility, as others can replicate experiments to validate findings, reducing the risks of hidden biases or unethical practices. Additionally, open-source frameworks democratize AI by making cutting-edge tools available to a broader audience, ensuring inclusivity and equitable access to technology. These practices align with ethical principles of accountability, fairness, and trust in AI systems.