AutoFlowchart: 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]
C to Pascal Converter: A C/C++/BCB to Object Pascal (Delphi/Kylix) translator. [Open Source, GPL]
Code coverage tool for Delphi: Cyamon's Discover is a coverage test tool for Delphi to detect unexecuted code.
Delphi + JavaDoc = DelphiCodeToDoc: 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.
Delphi Application Peeper: An tool which allows you to investigate Delphi and C++ Builder applications during them are running. [Freeware and commercial versions]
Delphi Knowledge Base: Tool with collection of Delphi tips and articles. By Baltsoft. [Commercial]
DFMEd: Convert DFM files to text files and visa versa. [Open source]
Doc-O-Matic: A tool for creating fully cross linked documentation systems and manuals in PDF, HTML, HTML Help, Windows Help and RTF.
HyperDelphi: Online converter Delphi source code to readable HTML code.
JADD - Just Another DelphiDoc: 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]
Korzh.com - Tools: Localizer pack and database tools.
LizaJet Installer: Installer for Delphi developers based on Object Pascal Script, a design Studio and a common framework for installation and upgrade.
Source Help Builder: Create help system for Delphi source code. It can be generated as popular Help formats (HLP and CHM) so printed documentation in PDF format.