Delphi
Delphi is an object-oriented programming language and integrated development environment, based on Object Pascal, originally released by Borland in 1995 for rapid Windows application development.
Definition
Delphi is an object-oriented programming language and integrated development environment, based on Object Pascal, originally released by Borland in 1995 for rapid Windows application development.
Overview
Delphi paired the Pascal-derived Object Pascal language with a visual, drag-and-drop IDE, letting developers build native Windows desktop applications by placing components on a form and wiring up event handlers — a workflow that was strikingly productive for its era and directly influenced later RAD (rapid application development) tools. It compiles straight to native machine code rather than an intermediate bytecode, giving Delphi applications fast startup times and no runtime dependency on a managed framework. Ownership of Delphi passed through several companies (Borland, CodeGear, Embarcadero, and now Idera), and the tool evolved from a Windows-only product into a cross-platform environment capable of targeting Windows, macOS, iOS, Android, and Linux from a single Object Pascal codebase via the FireMonkey UI framework. Despite the rise of C#, Java, and web-based stacks, Delphi retains a dedicated niche in industries with large legacy investments, such as finance, manufacturing, and government systems, where its native compilation and component library (VCL) remain valued for performance and long-term maintainability. Modern Delphi still emphasizes strong typing, component-based visual design, and native code generation, positioning it as an alternative to more mainstream cross-platform frameworks for teams that already have Object Pascal expertise or existing Delphi codebases to maintain and extend. It is often mentioned alongside Object-Oriented Programming (OOP) in this space. It is often mentioned alongside Static Typing in this space.
Key Features
- Object Pascal language with strong static typing
- Visual, component-based IDE for drag-and-drop UI design
- Compiles to native machine code, not an intermediate bytecode
- Cross-platform targeting via the FireMonkey (FMX) framework
- Mature VCL component library for native Windows UIs
- Long history of backward compatibility for legacy codebases