Leon

Leon is an open-source personal assistant designed to run on your own server, giving you full control over your data. Built with a modular architecture, it supports extensible packages (skills) for automating tasks like scheduling, translation, and mental health tracking. Targeted at developers and privacy-conscious users, Leon uses NLP, TTS, and STT to interact via text or speech, with support for both cloud and offline TTS/STT providers. Key features include a growing library of skills such as Video Translator, Memo, Reverse Dictionary, and Hollywood, plus cron-based scheduling for automated tasks. Leon operates through a CLI and client web app, with plans to rebuild the client in React. It integrates with major cloud services (Google Cloud, AWS, IBM Watson, Azure) and offline engines like CMU Flite and Coqui STT. Privacy is core: no third-party access to your data unless you explicitly configure it. The project is MIT-licensed, encouraging community contributions. Unlike proprietary assistants (Alexa, Google Assistant), Leon requires technical setup and offers a smaller ecosystem but complete autonomy. For developers who want to build and control their AI assistant, Leon provides a flexible, transparent foundation. Its roadmap includes more skills, cross-platform support, and a React-based client. It's not ready for mainstream consumers but excels as a DIY automation hub.