Donut Browser Nightly

Donut Browser Nightly creates separate local browser profiles so you can operate multiple online identities without mixing their data. Each profile has its own browser fingerprint, storage, network connection, and proxy, making it suitable for running separate seller, social, advertising, or client accounts. Profiles remain persistent and can be grouped, tagged, and assigned to individual links such as dashboards or calendar invitations.

Canvas, WebGL, audio, fonts, and time-zone signals stay consistent inside each profile while remaining distinct from other profiles. Proxy connections support HTTP, HTTPS, SOCKS4, SOCKS5, basic authentication, IP allowlists, and dynamic proxy URLs, while a .conf file can configure routing so the country, ASN, and time zone align. Existing profiles can be brought into Donut, and a local REST API can control the desktop app for automated workflows.

The optional Docker sync server synchronizes profiles, proxies, and groups between devices using end-to-end encryption protected by a password known only to you. Pro adds browser-automation APIs, MCP tooling, and encrypted cloud backup for teams and operators, with remote MCP access also available for AI agents. Donut is built as a desktop application, so profile data stays on the machine unless you choose to share it; it includes no tracking, device fingerprinting, or analytics SDK.

The developer describes Donut Browser as open source for macOS, Windows, and Linux, while this cataloged build targets MacOS on Apple Silicon arm64, including M1 through M4 and newer Macs. It is freeware, and macOS users can receive updates through brew upgrade.