For this book, you will need access to the internet. Links will be provided if you are setting up your own web server on where to go to download the web server software and the Open Atrium distribution. All of the software required to follow along and install Open Atrium is considered open source and available as free downloads. You will also need a web browser to follow the examples. If you are setting a web server or hosting your site with a web hosting provider, you will want to review the system requirements at the beginning of Chapter 2.