Java developer, author of:

• JFreeChart - a very popular 2D chart library for the Java(tm) platform (open source, LGPL);
• Orson Charts 3D - a 3D chart library for the Java(tm) and Android(tm) platforms (GPLv3 or proprietary);
• Orson PDF - a PDFGraphics2D implementation for Java2D (GPLv3 or proprietary);
• JFreeSVG - an SVGGraphics2D implementation for Java2D (GPLv3 or proprietary);
• FXGraphics2D - a 'Graphics2D' implementation for the JavaFX Canvas (open source, BSD-style);
• JSFreeChart - a 2D chart library for HTML5 (open source, GPL).