JGraph is a free, mature, and robust Java diagramming library. It contains all the graph visualization, layout, and interaction functionality you might expect in a graph library, including multiple views, layering, zoom, drag and drop, undo, automatic expanding and collapsing, routing, and layouts. You can create workflow editors, BPMN, CAD tools, network diagrams, database visualization tools, and more. It is fully documented, including examples, and has an active support community.
Asbru Web Content Editor is a cross-browser and cross-platform WYSIWYG HTML/XHTML Web content editor component for Web designers and programmers. It can be integrated into Web applications to give non-technical users access to create and update Web content. It can be used as a replacement for a simple TEXTAREA input field in contact forms, message boards, Web email systems, and Web content management systems. Features include CSS style sheet support, drag and drop editing, and advanced hyperlink and media managers.
edit-on Pro is a cross-platform, in-browser, WYSIWYG editor Java applet which enables XHTML content authoring with XML markup. The editor is compact, powerful and requires no special libraries or client plugins. It includes CSS support, table editing, a spelling checker, multi-language support, and features an API that allows full customisation and seamless integration into Web-based applications. It perfectly complements content management systems, e-learning, knowledge management systems, and CRM. A free trial version is available for download and includes complete developer samples and a comprehensive integration manual.
Vis/Space is a client-server system for visually exploring data structures in 3D virtual space. It allows the placement of various data sources in a three-dimensional environment. Custom search terms can be entered into a query field, or can be navigated to and from an existing object. All objects like images and "text screens" can be moved around. A single click on an image shows the full-resolution version in the foreground. Whole collections of images can be moved. A click to the cube also toggles among several different possible layouts. Data sources include search engines, microblogging, Wikipedia, image/video search, and 4chan.
Free Java is a development environment designed to help beginners write Java programs. Its editor includes syntax highlighting and an undo/redo function. It features a structure panel and a file browser. Compiling and running a program can be done with the push of a single button, and compiler errors are shown clearly. There is also a virtual console to show a program's console output. Free Java is based on J2SDK 1.3.