i-net Clear Reports (formerly i-net Crystal-Clear) is a very powerful reporting solution. It can accommodate a broad range of reporting needs, from a simple standalone application to a really big enterprise Web solution. It can produce many different output formats like Java Viewer, PDF, HTML, PS, RTF, XLS, TXT, CSV, SVG, and XML. It can generate reports from many different data sources like JDBC, ODBC, Java API, JNDI Data Source, and without data.
ChordDB is a Web-based database front-end for keeping track of and typesetting chord files (a.k.a. guitar fake sheets). It accepts chord and chordpro files as inputs, and creates output sets in a large variety of formats (PDF, text, chordpro, LaTeX) with the help of pdftex and the LaTeX Songbook style. Songs are stored internally using SQLite, so there is very little need for configuration.
JasperAssistant is a visual report designer tool for JasperReports, a popular open-source reporting engine. It is built on top of the Eclipse's plug-in architecture, and its main goal is to help you create JasperReports report definition files through an intuitive graphical interface.