Welcome to UNDO Tool!
Undo tool is developed as Microsoft Silverlight application.
Browsers that support Silverlight :
Internet Explorer 9+ | Firefox 12+ | Safari on Mac OS 10.6+
You need to download and install Microsoft Silverlight plug-in to run this tool.
It takes less than a minute to get you started.
Please download and install the plug-in from here.
More information on Silverlight system requirement are available here