This download of EmSnoop is fully functional. It includes a demo licence which enables all features, but with some limits on the number of operations or time that each feature can be used for.
(Licence Agreement/Terms and Conditions here)
Please contact contact@fusinity.com if you would like a time-limited trial licence with no feature limits, to purchase a permanent licence or if you need any help working with EmSnoop.
Uninstallation: just go to the Windows Control Panel->Programs and Features and use the uninstall option.