Boru’s Single Sign On Application for Vtiger and Google Apps helps you use both programs with greater ease. Most people use it by clicking the “Log in with Google” button on the Vtiger login screen which will log you into your Vtiger without you having to actually type in the information.
The application works in reverse as well! If you log into Vtiger first, Single Sign On will login in your Google Apps as well.
Once you set up a new user in Google Apps, a Vtiger user will automatically be created with the default profile of your choice. This gives you the convenience of setting up your users in one place only.