CDex 1.70 - The last truly portable version packaged in a zip file with no installer Download Link
This is the last version of CDex which was truly portable on it's own without the need to use third-party software.
CDex 1.81 - The last installer which does not contain promotional software Download Link
CDEX 1.85 The latest version packaged in a zip file with no installer Download Link
In theory you could install version 1.81 to create shortcuts and then replace the files with the ones in this archive to update to the latest version.
CDex 1.85 Download Link
Most recent version as of 4/28/2017.