Modernizing a legacy Delphi application is critical for improving long-term scalability, data security, and cloud readiness. Depending on whether your goal is to stay within the Embarcadero ecosystem or rewrite the codebase entirely, different tools provide automated code conversion to reduce manual labor.
The top five Delphi code converter and modernization tools are: 1. Ispirer Toolkit (nGLFly Wizard)
The Ispirer Toolkit nGLFly Wizard is a premier cross-platform tool used to rewrite legacy Delphi applications into modern languages.
Target Architecture: Automatically converts Object Pascal/Delphi source code into C# (.NET WinForms or WPF), Java, Python, or JavaScript frameworks like ReactJS and AngularJS.
Automation Depth: Parses the complete structure of the application, mapping visual components (VCL), database queries, business logic, and class files into equivalent modern objects.
Best For: Businesses seeking complete architectural transformation and wanting to move away from the Delphi platform entirely. 2. Delphi Parser
The Delphi Parser is a powerful automation engine specifically built for mass refactoring and upgrading within the Delphi language ecosystem.
Target Architecture: Migrates old Delphi codebases (such as pre-Unicode Delphi 7) up to modern Delphi editions (like Delphi 12 or 13).
Automation Depth: Uses a customized script-driven scanning rule set to find and replace legacy components, fix deprecated code blocks, and migrate database links (like converting BDE to FireDAC).
Best For: Organizations with massive legacy codebases that want to stay on the Delphi platform but require rapid modernization to run natively on 64-bit systems, Windows 11, or macOS. 3. Embarcadero reFind (Built-in RAD Studio Utility)
The Embarcadero reFind tool is a command-line utility packaged directly inside RAD Studio that uses Perl-compatible regular expressions to update source code.
Target Architecture: Upgrades old Delphi versions to contemporary RAD Studio environments.
Automation Depth: Scans codebases to map text patterns and automate the migration of obsolete third-party libraries and database layers. It is most frequently deployed to swap out deprecated Borland Database Engine (BDE) code with modern FireDAC components.
Best For: Developers carrying out in-house, self-managed code modernization projects without wanting to purchase third-party enterprise tools. 4. TextTransformer (Delphi2C#)
The TextTransformer Delphi2C# converter is a specialized migration program utilizing a comprehensive language parser designed for accurate code translation.
Target Architecture: Translates Object Pascal code into native C# syntax.
Automation Depth: Includes an advanced integrated preprocessor that properly interprets conditional compilation directives ({$IFDEF}) inside the source code. It systematically re-models syntax, arrays, and native types to standard .NET formats.
Best For: Development teams targeting a clean C# code output that respects original preprocessor conditions and complex conditional code blocks. 5. Legacyleap Studio
The Legacyleap Delphi Migration Platform is an AI-accelerated legacy modernization platform featuring dedicated AI copilot agents.
Target Architecture: Upgrades existing Delphi codebases or assists in porting logic to modern microservices and web environments.
Automation Depth: Generates complete application architecture maps, automatically produces test harnesses, and features human-in-the-loop validation checkpoints during the code translation process.
Best For: Enterprise-scale applications requiring software visualization alongside AI-assisted code transformation to ensure continuous validation. Migration Path Comparison Core Modernization Strategy Target Output Primary Benefit Ispirer Toolkit Re-architect / Rewrite C#, Java, Python, JavaScript Broad multi-language target options Delphi Parser Upgraded modern Delphi (RAD Studio) Keeps existing development teams fast Embarcadero reFind Modern Delphi (FireDAC / 64-bit) Included with RAD Studio IDE TextTransformer C# (.NET framework) Handles conditional preprocessor code well Legacyleap Studio Re-architect / Refactor Modern Delphi or Cloud Architectures Deep AI code analysis and maps
If you’d like to narrow down the best tool choice, let me know:
What is the estimated size/lines of code of your current codebase?
Are you looking to stay within Delphi or rewrite to another language (like C# or Java)?
What database engine is your legacy app currently tied to (e.g., BDE, InterBase, SQL Server)?
Delphi Modernization with Codeways Toolkit • Blog – Ispirer