DelphiCodeToDoc is a free documentation system for Delphi. It uses information about source code symbols and formatted comments in files to produce accurate documentation from application and component.
Automatic generation of documentation on Delphi projects from the source code (HTML, (old) Windows Help, LaTeX, PDF and export to XMI) and creating of diagrams. [Open source, GPL]
A tool to generate flowchart from source code C, C++, VC++(Visual C++ .NET), Delphi(Object Pascal). Its flowchart can expand and shrink. Also in VCL component version with FlowchartImage name. [Commercial]