Atomic Agent is an open-source, local-first AI agent that runs on your own machine. It drives your real browser, files, shell and git, keeps every session on your own disk, and runs open models locally with no cloud account, API key or token bill required. The desktop app for Mac, Windows and Linux uses TurboQuant for larger local context windows and an Atomic Fusion mode in which a cloud model plans while local agents execute. Atomic Agent is part of the Atomic product family alongside Atomic Bot, Atomic Chat and Atomic Mail.