Witsy

An AI assistant designed for macOS that lets users supply their own encryption keys, ensuring that all processed data remains under the user’s cryptographic control. It operates locally, handling prompts and generating responses without transmitting content to external services, which aligns with privacy‑focused workflows. The tool is positioned for individuals or teams that need conversational assistance while maintaining strict data sovereignty.

Its design follows a “bring your own keys” model, meaning that encryption keys are generated and stored by the user rather than the provider. This approach allows the assistant to encrypt inputs, outputs, and any intermediate state, giving users confidence that sensitive information never leaves their trusted environment. The implementation integrates with native macOS APIs to provide a seamless desktop experience.

The software is marked as stable and is distributed as a core macOS application, ready for everyday productivity tasks such as drafting text, summarizing documents, or answering queries. It targets users who want AI‑driven help without compromising on encryption control or on‑device processing.