JasperReports Library

JasperReports Library is the world's most popular open source business intelligence and reporting engine.
It is entirely written in Java and it is able to use data coming from any kind of data source and produce pixel-perfect documents that can be viewed, printed or exported in a variety of document formats including HTML, PDF, Excel, OpenOffice and Word.

The project is also available at:
https://github.com/TIBCOSoftware/jasperreports

Jaspersoft Studio is the open source report designer for the JasperReports Library.
https://community.jaspersoft.com/project/jaspersoft-studio

JasperReports Server is the most popular open source interactive reporting and analytics server built-on JasperReports Library.
https://community.jaspersoft.com/project/jasperreports-server

JasperReports IO is for reporting and data visualization in a world of cloud, microservices, and DevOps.
https://community.jaspersoft.com/project/jasperreports-io