SharePoint Server 2013 - Options
Options Overview
Office Web Apps Server
Office Web Apps Server lets you open and edit Office 2013 documents like Excel, Word, PowerPoint, and OneNote in your web browser.
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SharePoint 2013 Office Web Apps Server
Project Server
Project Server 2013, built on SharePoint Server 2013, offers an enterprise project portfolio management solution.
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SharePoint 2013 Project Server
