The professional Free Pascal RAD IDE

  • Cross platform
  • Drag & Drop Form Designer
  • Open source (GPL/LGPL)
  • Delphi converter


Version 2.0.12 for

What is Lazarus?

Lazarus is a Delphi compatible cross-platform IDE for Rapid Application Development. It has variety of components ready for use and a graphical form designer to easily create complex graphical user interfaces.

Learn more... Wikipedia

What can it do?

You can create your own open source or commercial applications. With Lazarus you can create file browsers, image viewers, database applications, graphics editing software, games, 3D software, medical analysis software or any other type of software.

See Application Gallery Why use it?

Where to learn?

Lazarus has a huge community of people supporting each other. It include scientists and students, pupils and teachers, professionals and hobbyists. Our wiki provides tutorials, documentations and ideas. Our forums and mailing-list offer a space to ask questions and talk to users and the developers.

Start Learning Books | Online Tutorials


A new lazarus handbook is released.

The Free Pascal and Lazarus foundation will receive 50% of the profits

Lazarus book The book is all about Lazarus and FPC necessities. It is printed in 2 volumes with a total of 935 pages.
Visit the Blaise Pascal shop

Random Project

from our showcase.
This is an example of what can be done with Lazarus

LazPaint LazPaint is an image editor with antialiasing and alpha blending, layers, providing many features like gradients, deformation, filters... Visit project homepage

Tip of the day

Track variables and identifiers in your code by temporarily highlighting them (on the stroke of a key), using the "user defined markup".