Microsoft has released Microsoft Application Compatibility Toolkit (ACT) 5.6. It has tools and necessary documentation for users.

This Toolkit helps users to make evaluation regarding different applications compatibility for Windows Vista, Windows 7 and with other Windows applications.

5.6’s Application Compatibility Manager gives support to evaluate the 32-bit and 64-bit Windows compatibility of applications
And it makes ease for users who want to move from 32-bit Windows to 64-bit version.

Microsoft Application Compatibility Toolkit 5.6 For Download