The NightLabs PDF Viewer is an Eclipse plug-in for viewing PDF files in Eclipse-RCP-based applications. It contains Eclipse UI components (like a 'Composite' or an 'Editor') for the easy integration into your own program and a stand-alone viewer app.
DUPS can be used to present any set of images depicting a chronological sequence. It creates a set of HTML pages acting as a browser based picture/pdf viewer. The emphasis lies on displaying two pictures side by side enabling the user to compare them.
PDF Annot is a piece of software that enables you to add audio and text annotation to a PDF. It uses JPedal SimpleViewer and iText library. Annotations are supported by Adobe'sofficial PDF Reader. Report any bug here: krakosia[at]gmail.com
Xom (Xml Object Model) is a lightweight, powerful, and extensible framework for representing Java gui elements. Also, general java gui tools/frameworks for creating impressive user interfaces. Includes a basic PDF viewer, and various gui components.