Here are some tools, with downloadable source code:

• .Dfm binary to Txt converter : convert all the .DFM in binary format to their ASCII format
  
• A .DFM Parser : this utility parses the Delphi .DFM file, building a tree representation, which is the first step for transforming the content of a tForm
  
• The ColiGet Full Text Searcher : a nice utility allowing to find all the files in a directory satisfyig a request like:
      ( uml OR "design pattern" ) AND course
  The same thing as GoogleSearch with "+" and "-", but with a Pascal syntax
  
• The DCCIL .BAT Generator : this tool generates a .BAT which can be used to compile your project with the DCCIL command line compiler. All relevant parameters are extracted from the .BDSOPT configuration file
  
• The Delphi for .Net .BDSPROJ file : in this first part, we present the content of the .BDSPROJ configuration file for Delphi 7, Delphi 8 and Delphi 2005. The file is analyzed with a small Delphi .XML parser
  
• Component to Code : generate the component creation and initialization code by analyzing the .DFM. Handy to avoid installing components on the Palette when examining new libraries
  
• EXE DLL PE Explorer : presents and analyzes the content of .EXE and .DLL files. The starting point for extracting resources, spying .DLL function calls or injecting additional functionalities
  
• the Alsacian Notation : using identifier prefixes like k_constant, t_type, g_global, l_local, p_parameter. Presentation, rationale and benefits.
  
• Treeview .HTML Help Viewer : the use of a Treeview along with a WebBrowser to display .HTML files alows both structuring and ordering of the help topics
  
• Cooking the Code : a source code filtering utility which removes unwanted rows, areas and comments. Complete with Unit Test.
  
• Mouse and Keyboard Record and Playback : record and playback all mouse and keyboard messages : all windows messages are saved in a list (or a file) and can be replayed on the spot or later. A must for debugging VCL control creation or event logging. Includes a readable format which can be used for SendKey / SendClicks replays.