If you are reading this, it means you tried to download an Eclipse Update Site. This URL is an Eclipse Update Site that can be used to install Atlas into Eclipse from the "Help" > "Install New Software...." menu in Eclipse's main menu.

To use this site, use the following steps:

1. Click "Help" > "Install New Software...." This wizard will show you the items that are available for installation.
2. Enter this URL as a new Update Site.
3. Select the Atlas plugin from the available installations.
4. Click "Next".
5. After you have reviewed the licenses and find them to be acceptable, check "I accept the terms in the license agreements."
6. Click "Finish" to install the selected plugins.

These instructions are also available at the following video: http://www.ensoftcorp.com/atlas/getting-started-with-atlas/#Installation

For more information about Update Sites, see the official Eclipse documentation.