High Quality Content by WIKIPEDIA articles! Microsoft Office Web Apps is a web-based version of the Microsoft Office productivity suite. It includes the web-based versions of Microsoft Word, Microsoft Excel, Microsoft PowerPoint, and Microsoft OneNote. The web applications allow users to access their documents directly from anywhere within a web browser as well as share files and collaborate with other users online. Supported web browsers include Internet Explorer 7 or later, Mozilla Firefox 3.5 or later, Google Chrome and Safari 4.