Lazarus is a RAD Object Pascal Development IDE for use with Free Pascal. It is the open source equivalent of the Delphi VCL, designed to be widget-independent and to work on any platform where Free Pascal can be found.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
Total Redesign of the Lazarus Component Library. The component library and IDE code are now cross-platform capable Linux/Win32 without code changes. The GUI tool kit GTK+ on this first pass, is totally abstracted from the component library. This will allow later implementation of the QT widget set by replacing anly one source unit. Lazarus uses the very fast and efficent Delphi compatible, Free Pascal compiler. This is a component developers release.