The professional Free Pascal RAD IDE

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


Version 1.8.4 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

Random Project

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

KSP Sound Player KSP is relatively new audio player that already supports almost all features any modern powerful player has to support. However KSP is still player easy in use and intuitive, something that you can call really user oriented. Visit project homepage

Tip of the day:

View the values that watches, stack and locals had on previous breakpoints/steps during your debug session, using the debug history window. Or export your session and send it to a co-worker.