CR = Crystal Report<br />
Redist = Re distributor<br />
x86 = stands for windows 32bit OS<br />
x64 = stands for windows 64bit OS
this .msi is installed in client pc if your .net app have used crystal report.
It's not for developer UI, it supports CR-viewer to display reports in client machine
like you need to install .net framework to run .net app on client machine not whole Visual studio...