BIRT (Eclipse)

BIRT (Business Intelligence and Reporting Tools) is an open-source reporting framework by the Eclipse Foundation. It provides a designer for creating layouts (tables, charts, cross-tabs) and a runtime engine for generating those reports from various data sources. Developers can embed BIRT into Java or web apps, integrating pixel-perfect or interactive reports. A robust expression engine handles calculations, while scripting extends advanced logic. Though it requires technical know-how, BIRT’s free license, large community, and flexibility make it a solid choice for custom reporting solutions in Java ecosystems.