# DE Decompiler — Documentation

> Official references for the professional decompiler for VCL applications written in Delphi 3–13, Win32 and Win64. Analysis and reverse engineering are the primary uses; recovered Delphi-like code requires manual review and correction. Verify current releases, prices and terms on the linked public pages. Core analysis is offline; optional remote AI requests transmit the submitted code to the selected provider. C++Builder VCL applications are also supported, including forms, units, classes and functions. Their code is reconstructed as Delphi-like Pascal with PAS/DFM export. C++Builder-specific library RTTI knowledge bases are not yet available, so code recovery quality is lower than for Delphi. The Delphi recovery estimate must not be applied to C++Builder.

- [Documentation](https://www.de-decompiler.com/documentation.htm): The English user manual for DE Decompiler. [Markdown](https://www.de-decompiler.com/ai/documentation.md).
- [Introduction](https://www.de-decompiler.com/help/description.htm): Professional decompiler for VCL applications written in Delphi or built with C++Builder. Analyze Win32/Win64 code, forms, units and classes for reverse engineering, forensics and code recovery. [Markdown](https://www.de-decompiler.com/ai/help/description.md).
- [Quick start](https://www.de-decompiler.com/help/quick_start.htm): Quick start in DE Decompiler for supported VCL applications written in Delphi or built with C++Builder. Win32/Win64 analysis and edition requirements. [Markdown](https://www.de-decompiler.com/ai/help/quick-start.md).
- [Compiler compatibility and RTTI](https://www.de-decompiler.com/help/compatibility.htm): Analyze Win32/Win64 VCL applications written in Delphi 3–13 or built with C++Builder. Understand compiler identification, RTTI coverage and C++Builder code-recovery limits. [Markdown](https://www.de-decompiler.com/ai/help/compatibility.md).
- [The main window](https://www.de-decompiler.com/help/the_main_window.htm): The project tree connects recovered forms, units, classes and procedures with the code, declaration and binary views. [Markdown](https://www.de-decompiler.com/ai/help/the-main-window.md).
- [Units, classes and functions](https://www.de-decompiler.com/help/recovered_structure.htm): Professional decompiler for VCL applications written in Delphi or built with C++Builder. Analyze Win32/Win64 code, forms, units and classes for reverse engineering, forensics and code recovery. [Markdown](https://www.de-decompiler.com/ai/help/recovered-structure.md).
- [Opening a file](https://www.de-decompiler.com/help/opening_file.htm): Professional decompiler for VCL applications written in Delphi or built with C++Builder. Analyze Win32/Win64 code, forms, units and classes for reverse engineering, forensics and code recovery. [Markdown](https://www.de-decompiler.com/ai/help/opening-file.md).
- [Analysis databases](https://www.de-decompiler.com/help/working_with_database.htm): An analysis database saves recovered project information so that you can return to an investigation without starting from the binary each time. [Markdown](https://www.de-decompiler.com/ai/help/working-with-database.md).
- [Saving recovered material](https://www.de-decompiler.com/help/saving_results.htm): Save the output needed for the investigation while retaining the original binary and the analysis context. [Markdown](https://www.de-decompiler.com/ai/help/saving-results.md).
- [Saving the procedure list](https://www.de-decompiler.com/help/saving_the_list_of_procedures.htm): File > Save procedures list exports recognized procedure names and addresses for use in other analysis workflows. [Markdown](https://www.de-decompiler.com/ai/help/saving-the-list-of-procedures.md).
- [Viewing and comparing code](https://www.de-decompiler.com/help/viewing_of_code.htm): Use reconstructed Delphi statements to understand a procedure, and native disassembly to check how a result was obtained. [Markdown](https://www.de-decompiler.com/ai/help/viewing-of-code.md).
- [Navigating by address and tree path](https://www.de-decompiler.com/help/jump_to_address.htm): Tools > Jump to virtual address opens a location by its virtual address. [Markdown](https://www.de-decompiler.com/ai/help/jump-to-address.md).
- [Finding procedures and text](https://www.de-decompiler.com/help/string_search.htm): Procedure-name search and listing-text search serve different purposes. [Markdown](https://www.de-decompiler.com/ai/help/string-search.md).
- [String references](https://www.de-decompiler.com/help/string_references.htm): Tools > String references helps locate recognized literals and the procedures associated with them. String-reference browsing is available in Free Lite and commercial editions. [Markdown](https://www.de-decompiler.com/ai/help/string-references.md).
- [Decompilation from an address](https://www.de-decompiler.com/help/decompilation_from_offset.htm): Tools > Decompile from VA requests decompilation from a specified virtual address. [Markdown](https://www.de-decompiler.com/ai/help/decompilation-from-offset.md).
- [Inspecting and patching bytes](https://www.de-decompiler.com/help/patch_data.htm): Use the HEX Editor tab to inspect and edit the file bytes underlying the recovered code and form data. [Markdown](https://www.de-decompiler.com/ai/help/patch-data.md).
- [Program options](https://www.de-decompiler.com/help/program_options.htm): Program options in DE Decompiler for supported VCL applications written in Delphi or built with C++Builder. Win32/Win64 analysis and edition requirements. [Markdown](https://www.de-decompiler.com/ai/help/program-options.md).
- [VCL forms and visual inspection](https://www.de-decompiler.com/help/forms.htm): Professional decompiler for VCL applications written in Delphi or built with C++Builder. Analyze Win32/Win64 code, forms, units and classes for reverse engineering, forensics and code recovery. [Markdown](https://www.de-decompiler.com/ai/help/forms.md).
- [Decompilation processing](https://www.de-decompiler.com/help/decompilation.htm): Native-code decompilation reconstructs Delphi-like statements from machine instructions and available metadata; processing options control how the resulting listing is represented. [Markdown](https://www.de-decompiler.com/ai/help/decompilation.md).
- [Disassembly display](https://www.de-decompiler.com/help/disassembler.htm): Disassembly display in DE Decompiler for supported VCL applications written in Delphi or built with C++Builder. Win32/Win64 analysis and edition requirements. [Markdown](https://www.de-decompiler.com/ai/help/disassembler.md).
- [Themes and fonts](https://www.de-decompiler.com/help/color_scheme.htm): The Color Scheme list changes the presentation of code and binary views, including the available dark theme. [Markdown](https://www.de-decompiler.com/ai/help/color-scheme.md).
- [Processing modes and caching](https://www.de-decompiler.com/help/advanced_features.htm): Fast decompilation, full processing and cached output support different analysis workflows. [Markdown](https://www.de-decompiler.com/ai/help/advanced-features.md).
- [Interface language](https://www.de-decompiler.com/help/language_selection.htm): Select the interface language under Tools > Options in the Personalize section. [Markdown](https://www.de-decompiler.com/ai/help/language-selection.md).
- [AI Helper](https://www.de-decompiler.com/help/ai_code_enhancement.htm): AI Helper in DE Decompiler for supported VCL applications written in Delphi or built with C++Builder. Win32/Win64 analysis and edition requirements. [Markdown](https://www.de-decompiler.com/ai/help/ai-code-enhancement.md).
- [Plugins and the SDK](https://www.de-decompiler.com/help/plugins.htm): Use FRX Image Viewer to inspect and extract recovered form graphics, or develop a custom plugin through the shared SDK. [Markdown](https://www.de-decompiler.com/ai/help/plugins.md).
- [Obfuscation](https://www.de-decompiler.com/help/obfuscation.htm): Obfuscation in DE Decompiler for supported VCL applications written in Delphi or built with C++Builder. Win32/Win64 analysis and edition requirements. [Markdown](https://www.de-decompiler.com/ai/help/obfuscation.md).
- [Interpreting recovered code](https://www.de-decompiler.com/help/validation.htm): DE Decompiler reconstructs Delphi-like program logic from native instructions and available metadata. The information retained in the binary determines the detail of the result. [Markdown](https://www.de-decompiler.com/ai/help/validation.md).
- [Technical support](https://www.de-decompiler.com/help/support.htm): A focused report helps reproduce a recognition, form or decompilation issue. [Markdown](https://www.de-decompiler.com/ai/help/support.md).
- [Licensing](https://www.de-decompiler.com/help/registration.htm): Compare DE Decompiler licenses for Win32/Win64 VCL analysis of programs written in Delphi or built with C++Builder. Single Developer, Enterprise and renewal terms. [Markdown](https://www.de-decompiler.com/ai/help/registration.md).
- [About the developer](https://www.de-decompiler.com/help/about_author.htm): DE Decompiler is developed by DotFix Software. [Markdown](https://www.de-decompiler.com/ai/help/about-author.md).