All the popular browsers now have this feature.
- In Chrome it is called Incognito and it can be found in the File menu or you can click Ctrl + Shift + N (Cmd + Shift + N on Mac).
- In Firefox it is Private Browsing. Open the window from file or by using the shortcut Ctrl + Shift + P (Cmd + Shift + P on Mac).
- In IE it's InPrivate Window. Open a new one from Safety or by using Ctrl + Shift + P (Cmd + Shift + P on Mac).
- In Safari, click the Safari menu to open a new Private Browsing window.