Lazarus screenshot

Lazarus is a free and open-source Integrated Development Environment (IDE) specifically tailored for Rapid Application Development (RAD). It is designed to be Delphi-compatible, offering a seamless transition for developers familiar with Delphi. Lazarus supports cross-platform development, enabling the creation of applications that can run on various operating systems. With a visual form designer and an array of components, Lazarus simplifies the process of building complex graphical user interfaces...

Lazarus Key Features:

Cross-Platform Development:

Lazarus enables developers to create applications that seamlessly run on Windows, macOS, Linux, and other platforms, including Raspberry Pi.

Delphi Compatibility:

Lazarus is designed to be compatible with Delphi, providing a familiar environment for developers acquainted with Delphi's Object Pascal language.

Visual Form Designer:

The IDE features a powerful drag-and-drop form designer, streamlining the creation of intricate graphical user interfaces.

Rapid Application Development (RAD):

Lazarus facilitates rapid development with an integrated environment, making it suitable for creating a diverse range of applications.

Flexible Licensing:

LGPL licensed libraries allow developers to create applications under any desired license, including commercial closed-source projects.

GPL Licensed IDE:

The Lazarus IDE itself is distributed under the GPL license, providing an open-source foundation for development.

Ease of Use:

An installer with all required files simplifies the setup process.

The drag-and-drop form designer allows for the creation of powerful layouts.

Automatic synchronization between GUI forms and code enhances development efficiency.

A feature-rich code editor with syntax highlighting, code completion, and navigation tools.


Lazarus is open source, allowing developers to add or modify existing code and components to meet specific requirements.

The Lazarus package system facilitates the installation of third-party add-ons for additional components or IDE extensions.

Cross-Platform Projects:

Lazarus projects are inherently platform-independent, allowing easy migration by simply copying projects to another platform and recompiling.

Native Binaries:

Lazarus supports the creation of native binaries, enabling the distribution of applications without dependencies on external runtime environments.


Lazarus is a powerful IDE capable of handling large projects efficiently.

The Free Pascal compiler (FPC) used by Lazarus is continually developed to enhance performance.

Modern Object-Oriented Language:

Lazarus employs Free Pascal, a modern Object Pascal dialect, which is constantly evolving to incorporate features expected in contemporary programming languages.

Easily Extendable:

A vibrant community of developers maintains Lazarus Libraries and Packages, providing a wealth of add-ons and extensions for various purposes.


Lazarus supports various frameworks that streamline development, saving time on specific codebases.

In summary, Lazarus offers a comprehensive and feature-rich environment for Delphi-compatible cross-platform development. Its combination of a user-friendly interface, extensive component library, and support for modern programming paradigms makes it a versatile choice for developers creating a wide range of applications.

For windows 32 bit:

Size: 181.25 MB - Download

For windows 64 bit:

Size: 203.87 MB - Download