You can still find the archived version 5.1.0 and its related files on SourceForge: SourceForge Project Page iReport Designer v5.1.0 (Download standalone installers or NetBeans plugins). JasperReports Library 5.1.0 : For developers needing the core library, the is available at the JasperReports SourceForge Archive Key Version Features & Fixes
: If you have Java 8 or higher installed, iReport might crash on startup. You don't need to uninstall your newer Java; simply download a folder and point to it in your ireport.conf file (located in the folder of your installation) by setting the Stack Overflow Moving Forward download jaspersoft ireport designer 5.1.0
: Enhanced support for markers within reports. You can still find the archived version 5