JasperReports is a variously-licensed reporting tool & library, written in Java, which can generate HTML, PDF, Excel, CSV, and other format reports. JasperReports Server Community Edition is Open Source, licensed under the GNU Affero General Public License 3 (AGPL v4).
Telerik Reporting is a lightweight OLAP reporting solution for all .NET web, desktop and cloud platforms (ASP.NET, Ajax, MVC, Silverlight, WPF, Windows Forms and Azure) which targets developers and end-users alike.
SAP Crystal Reports software is the de facto standard in reporting. With SAP Crystal Reports, you can create powerful, richly formatted, dynamic reports from virtually any data source, delivered in dozens of formats, in up to 24 languages.
i-net Clear Reports is an elegant reporting solution for Java, accommodating a broad scope of your reporting needs. If you know reporting software like Crystal Reports, you will love i-net Clear Reports.
CuteReport is an easy, powerful and extendable report solution based on Qt framework. Generally, CuteReport consists of two parts: a core library and template designer. Both are totally modular and their functionality can be simply extended.