Somasegar Just announced the new way to get started with Office and SharePoint development without having to install anything onto your machine.
“Napa” provides a lightweight, browser-based companion to the Visual Studio rich client, Available through http://dev.office.com/, it supports building apps for Office and SharePoint, apps which can be surfaced through an Office 2013 application (e.g. Excel), through an Office Web App (e.g. Excel Web App), or through SharePoint.
Try out the experience today at http://dev.office.com.
For a tour through “Napa” and the productive experience it provides for building apps for Office and SharePoint, see Jason Zander’s introductory post.