Gas Mask is simple hosts file manager for Mac OS X Leopard. It enables to edit hosts files and switch between them.
Gas Mask features editor with syntax highlighting. It will helps you track down errors in hosts files.
Hosts files can be switched simply by pressing hotkeys.
Support for Growl, the global notification system.
Licensed under the GPL. Gas Mask source code is freely available to anyone.
Gas Mask checks for updates automatically and notifies when new version is available.