AutoCAD WS is now shipping free as a commercial product after having graduated from Autodesk Labs as Project Butterfly. Project Butterfly now known as AutoCAD WS has been evolving over time since appearing in the Labs with more functionality and performance along with getting great feedback from users. AutoCAD WS requires only a browser such as Safari, IE, Chrome or Firefox with Flash installed. Now in addition being able to upload, edit, markup, and share in real-time with DWG files, you can also upload other file types like ZIP, Doc, and PDF files as a file storage solution. AutoCAD WS showing some of the File Save options DWG, DXF,JPG PNG, and a ZIP archive with Xrefs. AutoCAD 2011 Uploading a DWG to AutoCAD WS for sharing in a markup session. Sending a share invitation to Kate to markup a drawing in AutoCAD WS. AutoCAD WS - Kate joining the AutoCAD WS session AutoCAD WS - Two people marking up a drawing in real-time. AutoCAD 2011 showing markups from shared AutoCAD WS session   There is also AutoCAD WS Mobile from the Apple iTunes Store http://www.itunes.com/app/autocad-ws. With AutoCAD WS Mobile you can use the native iOS based AutoCAD WS Mobile to view, markup, and edit DWG files uploaded to your AutoCAD WS space.   AutoCAD WS Mobile being used on an iPad at a design & construction meeting. Measuring a DWG object with AutoCAD WS Mobile on an iPad. In Grayscale mode in AutoCAD WS Mobile on an iPhone Drawing Management in AutoCAD WS Mobile on an iPhone Invitation to share in AutoCAD WS Mobile on an iPhone Also released are plugins for several AutoCAD based products to add the ability to upload and manage files in AutoCAD WS. This new plug-in is available for everyone to download from http://www.autocadws.com/downloads, or as part of the Subscription Advantage Pack for AutoCAD 2011. AutoCAD WS Plugin Toolbar AutoCAD WS Plugin Ribbon AutoCAD WS Plug-in for AutoCAD 2011 is currently available for the following English only products: AutoCAD® 2011 AutoCAD LT 2011 (yes, AutoCAD LT) Read Kate’s LT Unlimited blog for more details. AutoCAD Architecture 2011 AutoCAD MEP  2011 AutoCAD Mechanical 2011 AutoCAD Plant 3D  2011 AutoCAD P&ID  2011 AutoCAD Civil 3D 2011 AutoCAD Electrical 2011 AutoCAD ecscad 2011 AutoCAD Structural Detailing 2011 AutoCAD Map 3D 2011 For more info: AutoCAD WS Web application and online workspace.http://www.autocadws.com AutoCAD WS Mobile app for the for Apple® iPad™, iPhone®, and iPod touch®, available for download on iTunes (www.itunes.com/app/autocad-ws) AutoCAD WS plug-in (www.autocadws.com/downloads)  to upload and synchronize files automatically from AutoCAD Tutorials & Getting Started info are available www.autocadws.com/tutorials & http://autocadws.com/tutorials/getting-started/ FAQ at www.autodesk.com/autocadws Did I mention these are FREE? Get out of the office, Go Mobile with AutoCAD WS! Shaan Go to the original post...