An ICC-based CMM for color management
Little cms is a color management library. Implements fast transforms between ICC profiles. It is focused on speed, and is portable across several platforms (MIT license)
3D modeling for everybody
DeleD is a 3D modeler and level-editor combined into one. It focuses at game development and is specifically designed to create static scenes. NOTE: a new webbased version called DeleD Designer is available at https://www.deled.io ! It has similar capabilities but is generally easier to use. Related project at https://sourceforge.net/projects/deled-plugins/, featuring DeleD plugins. A Lazarus port is available in the repository as well. Check out the official DeleD website at http://www.delgine.com for more info, updates and more.
HelpMaker is a Help Authoring Tool to make WinHelp, HTML-Help, HTML-Website and RTF (i.e., manuals) files. HelpMaker is fully functional GUI help authoring tool written in Delphi. Many open-source developers use this to document their open-source project
SimDesign open source folder for projects NativeXml, NativeJpg and NativeSvg
LDraw Design Pad is THE author/editor/reviewing reference tool for LDraw part files
Fractal Forge is an application written in Delphi that lets you easily explore the branches of the Mandelbrot set. It has received several very positive reviews.
RADLib is a graphics library. It was written in order to help developers design graphics applications easily and quickly. The library is available for .NET, Java, Delphi, Kylix.
Changes Desktop wallpaper with easy, automatically from local or web image sources. Gives you the best background freedom and simplicity :)
FastGEO is a computational geometry library written in the object pascal language.