While newer Service Packs (SP30+) exist, SP20 remains popular because: It is the "sweet spot" for Visual Studio 2010-2017 stability. It fixes critical IE11 rendering issues found in earlier versions.
SAP Crystal Reports for Visual Studio (the .NET SDK) uses a versioning system where "13.x" refers to the family of runtimes compatible with modern Windows environments. Service Pack 20 (SP20) was a stability release that improved compatibility with Windows 10 and various .NET Framework versions. Official Download Sources sap crystal reports 13.0.20 download
Exporting to PDF, Excel, and Word; interactive drill-down and printing. Development IDE While newer Service Packs (SP30+) exist, SP20 remains
of the "SAP Crystal Reports, developer version for Microsoft Visual Studio". This version is widely used as a runtime engine for .NET applications to display and print reports. SAP Community Download and Installation Guide Service Pack 20 (SP20) was a stability release