Msty

Msty is a desktop-first AI suite built around the idea that your chats, documents, and automations should stay on your machine by default. The flagship Msty Studio offers a unified workspace for chatting with both local models (via Ollama and similar runtimes) and frontier cloud models (Claude, GPT, Gemini), with personas, prompt libraries, knowledge stacks, and side-by-side comparison views. Companion products extend it: Msty Claw handles autonomous multi-step task automation with sandboxed folder-scoped tool use, and Msty Nexus acts as a local gateway that exposes OpenAI- and Anthropic-compatible endpoints across providers.

It is aimed at developers, researchers, and privacy-conscious knowledge workers who want one app to switch between local and cloud LLMs without leaking prompts to a SaaS backend. There is a free Studio tier with paid upgrades for advanced features; Claw is in beta with its own pricing. The vertical Msty Law product targets law firms with practice-management on top of the same private-AI plumbing.

Msty is not open source, but it leans heavily on the open local-model ecosystem and ships native installers for macOS, Windows, and Linux. The Nexus gateway is the most interesting piece for power users: it normalizes credentials and presets across providers so any OpenAI-compatible client can talk to your local Ollama models or a remote Anthropic key through one endpoint.