Osaurus is an innovative AI platform designed for macOS, enabling users to operate open models directly on their Mac while also providing the option to access cloud models for enhanced performance and share memory seamlessly between them. Developed using Swift specifically for Apple Silicon, it allows for complete offline functionality with local models through interfaces like Ollama, MLX, or LM Studio, ensuring that conversations, code, files, settings, agents, skills, and provider keys remain stored on the device unless the user opts for a cloud service. A convenient system-wide chat overlay grants users quick access to the AI from any application, and users can establish distinct agents tailored for various tasks such as coding, research, and file management, with each agent maintaining its own prompt, history, and memory. Osaurus intelligently synthesizes previous conversations into pertinent information, loads necessary skills for specific tasks, and provides agents with targeted access to relevant folders, file search capabilities, Git, and other essential tools. Additionally, agents operate within a secure sandbox environment, can delegate tasks to subagents, adhere to scheduled operations, react to changes in folders, utilize voice commands, and even create images, showcasing the platform's versatility and robust feature set. This comprehensive approach not only enhances productivity but also empowers users to customize their workflows efficiently.