SwitchHosts

SwitchHosts! is a free, open‑source utility that lets developers maintain and toggle between multiple hosts files. It provides a graphical interface where each hosts configuration can be edited, highlighted with syntax coloring, and enabled or disabled with a single click on the line number. The application supports both local and remote hosts sources, allowing users to import and export rule sets for easy sharing or backup.

The tool integrates with the operating system’s status menu, offering rapid switching of active hosts without opening the main window. On macOS, it also offers Alfred integration, enabling command‑line‑style activation through the Alfred launcher. Users can select several host configurations simultaneously, applying combined rules as needed.

Designed for developers who need to test or deploy services against different DNS mappings, SwitchHosts! focuses on straightforward management, quick toggling, and cross‑platform availability while remaining fully open source and free to use.