Show HN: Hob - Open-source, on device alternative to Claude Cowork and ChatGPT

Hob is a free, open-source desktop app for Mac, Windows, and Linux that uses on-device AI models to provide features like file management, web search, image recognition, and code execution, all while keeping user data on their local system. It currently supports Gemma 4 and gpt-oss models and allows users to add custom MCP connectors. Hob automatically detects the best open-weight model for a user's hardware and sets it up for use. The app is built using Electron and llama.cpp, and it uses sandboxed code execution and limited network access to ensure user data remains private.