For Crystal Reports XI (often referred to as version 11.0 or 11.5 for R2), the runtime is what allows your compiled application to communicate with the report files.
A common resource for finding the last available versions of XI R1 and R2 fixes is an archived SAP Community blog post . crystal reports xi runtime download
Avoid "cracked" versions of the designer. You are looking for the runtime (redistributable), which is free to distribute with your application. You do not need a crack for the runtime. For Crystal Reports XI (often referred to as version 11
Users with a current maintenance contract may still access older updates and client tools through the SAP Service Marketplace. crystal reports xi runtime download
A quick Google search reveals dozens of sites offering CrystalReportsXI_R2_Redist.zip .