Sigma is a browser with the AI built in rather than bolted on: an agent that automates form filling, booking and data gathering, chat with the current page, deep research across sources, translation in place, and image and text generation. Ad blocking and encrypted private profiles come as standard.
Eclipse, its local offline model, is the feature that matters most given the positioning. A browser assistant sees every page you visit, which is the most revealing dataset most people generate, and running a model on-device rather than sending that stream to a server is the only version of this that a privacy claim can survive.
Sigmabrowser in Estonia ships macOS, Windows and iOS builds with Android on a waitlist and Linux promised. No prices appear, only a 50 percent discount code for Premium. A local model is weaker than a hosted one, an agent with browser control acts inside every session you are logged into, and the Mnemonic blockchain profile is a design decision worth understanding before relying on it.
