
Lazarus is a free, open-source integrated development environment (IDE) for creating cross-platform applications using the Free Pascal programming language.
Key Features:
- Visual development: Drag-and-drop form designer for building graphical user interfaces (GUIs).
- Cross-platform: Supports Windows, macOS, Linux, and other platforms.
- Free Pascal compiler: Enables development of high-performance applications.
- Component library (LCL): Offers reusable components for GUI, database, and networking.
- Extensible: Supports third-party packages and custom components.
- Debugger and code editor: Includes syntax highlighting, code completion, and integrated debugging.
Common Uses:
- Building desktop GUI applications
- Developing cross-platform software
- Learning Pascal programming with visual development support
- Creating high-performance native applications
Summary:
Lazarus is a powerful IDE that allows developers to create native, cross-platform applications quickly using Pascal, combining a visual designer with a robust compiler and debugging tools.

