Lazarus - Le Bottin des Jeux Linux



Title: Lazarus Type: Tool
Genre: Development Status:
Category: Development ➤ IDE Commercial:
Tags: Development; IDE; RAD; Pascal Language; Free Pascal; Delphi; Frameworks; Multi-platform Demo:
Released: Latest : 1.6 / Dev : Dd64b0e Package Name: lazarus
Date: 2016-03-19 Extern Repo:
License: LGPL & GPL Repo: Debian
Perspective: Third person Package: ✓
Visual: 2D Binary: ✓
Pacing: Real Time Source: ✓
Played: Single PDA: ✓
Quality (record): 5 stars Quality (game):
Contrib.: Goupil & Louis ID: 11726
Created: 2013-04-15 Updated: 2018-01-17


[fr]: Un RAD/EDI multiplateforme de type RAD, fournissant aux développeurs un environnement de développement proche de Delphi (avec lequel il est compatible) pour le Free Pascal [en]: Lazarus is a Delphi compatible multi-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.


Lights on: Why ?: New version / Nouvelle version
Significant changes (this record):


Trailer / Gameplay [en] / [en] / [fr] :


Website & videos
[Homepage] [Dev site 1 2] [Features/About] [Screenshots] [Videos t t t g g g[fr] g] [Reviews] [WIKI] [FAQ] [RSS] [Changelog 1 2 3 4]

Commercial : [Support their work (Donate)]

• (empty)
Technical informations
[Open Hub] [PCGamingWiki] [MobyGames]

Devs (Lazarus & Free Pascal Team [fr] [en]) : [Site] [Forums] [twitter] [YouTube] [Interview 1 2]
Game : [Blog] [Forums] [twitter] [YouTube]

On other sites
[Wikipedia (Lazarus) [fr] [en]]
[Wikipedia (Delphi) [fr] [en]] - [Wikipedia (Kylix) [fr] [en]]
[Wikipedia (IDE) [fr] [en]] - [Wikipedia (RAD) [fr] [en]]


News / Source of this Entry (SotE) / News (SotN)

Description [fr]

Un IDE multiplateforme compatible avec Delphi pour le langage Free Pascal, par la Lazarus & Free Pascal Team.

Lazarus est un RAD/EDI multiplateforme pour le langage Free Pascal (en dépôts, un compilateur libre, multiplateforme et bénéficiant d'un très haut degré de compatibilité avec Delphi), c'est un logiciel de type RAD fournissant aux développeurs un environnement de développement proche de Delphi (de Borland) / Kylix (la version Linux de Delphi, par Borland, à présent abandonnée).
Il a pour devise "write once, compile anywhere" (n'écrivez qu'une fois, compilez partout), qui n'est pas étrangère à celle de Java "write once run anywhere" (n'écrivez qu'une fois, exécutez partout).

Utilisé par ces jeux / Used by these games : DSP Emulator, Klest-crossword,


Lazarus est un RAD/EDI multiplateforme développé en Free Pascal pour Free Pascal. Son objectif est de fournir aux programmeurs Pascal Objet un environnement de développement facile à utiliser s'approchant le plus possible de Delphi.

Free Pascal est un compilateur sous licence GPL fonctionnant sous Linux, Windows, OS/2, Mac OS X, BSD, iOS, Android, etc. Il est conçu pour interpréter et compiler le Pascal Objet de Delphi. À la différence de Java dont le slogan est « write once run anywhere » (écrire une fois, exécuter partout), celui de Lazarus et Free Pascal est « write once compile anywhere » (écrire une fois, compiler partout). Ainsi, Lazarus lui-même a été écrit en Pascal et fonctionne avec une seule base de code.

Description [en]

The professional Free Pascal RAD IDE

What is Lazarus?

Lazarus is a Delphi compatible multi-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.

Lazarus is a Delphi compatible multi-platform IDE for Free Pascal. It includes LCL which is more or less compatible with Delphi's VCL. Free Pascal is a GPL'ed compiler that runs on Linux, Win32, OS/2, 68K and more. Free Pascal is designed to be able to understand and compile Delphi syntax, which is OOP. Lazarus is the part of the missing puzzle that will allow you to develop Delphi like programs in all of the above platforms. Unlike Java which strives to be a write once run anywhere, Lazarus and Free Pascal strives for write once compile anywhere. Since the exact same compiler is available on all of the above platforms it means you don't need to do any recoding to produce identical products for different platforms.

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.

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.

Yeah, but what about the GUI? What widget set are you using?

That is the neat part. You decide. Lazarus is being developed to be totally and completely API independent. Once you write your code you just link it against the API widget set of your choice. If you want to use GTK+, great! If you want it to be Gnome compliant, great! As long as the interface code for the widget set you want to use is available you can link to it. If it isn't available, well you can write it.

For example. Let's say you are creating a product on Windows using the standard Windows widgets. Now you want to create a Linux version. First you decide what widget set you want to use. Let's assume you want to use gtk+. So you copy the code over to your Linux development machine, compile, and link against the gtk+ interface unit. That's it. You've now just created a Linux version of the Windows product without any additional coding.

At this point in the development we are using Win32, gtk2+, Carbon and QT as our API widget set. Bindings for custom drawn components are in the works and other widget sets are planned, too.

So is this thing really RAD like Delphi?

It sure is. Is it totally completed? No not yet.The overall IDE is complete and can be used for most programming needs. Several aspects of the project are still in need of help. Hint. Hint.

Can I use my existing Delphi code?

Some of it yes. If the code is standard Delphi pascal and it uses the standard components found in Delphi then the answer is yes. If it uses some specific database, OCX, or DCU then the answer would be no. These items are specific to Windows and would only work on and within Windows. However, if you are only looking to create a Windows product using Free Pascal and Lazarus then the answer would be yes. This hasn't been added to the LCL yet but it should be possible in the future.

Can I create commercial products with this?

Yes. The code for the Free Pascal compiler is licensed under the GPL. This means that it is open source, free, whatever name you want to stick to it. You can modify the code if you wish but you MUST distribute those changes or make them available to others if they wish to use it.

The FCL (Free Pascal Component Libraries) and the LCL (which will eventually become part of the FCL) are licensed under a modified LGPL. In a nut shell this means that you can write your own proprietary software that just links to these libraries. You can sell your application without the need to supply or make available your code. However, as with the compiler if you make modifications to the FCL or LCL you must make those changes available to the general public and the world.

I give up, where did the name come from?

One of the original projects that made an attempt to build a Delphi clone was Megido. However this effort died. Lazarus as you know was the biblical figure that was raised from the dead by Christ. Soooooo. The project is named Lazarus as it was started/raised from the death of Megido.


Lazarus is a free multi-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler, which supports dialects of Object Pascal, to varying degrees. Software developers use Lazarus to create native-code console and graphical user interface (GUI) applications for the desktop, and also for mobile devices, web applications, web services, visual components and function libraries (.so, .dll, etc., for use by other programs). The Free Pascal compiler supports a number of different platforms, such as Mac, Linux and Windows.

Lazarus inherits three features from its use of the Free Pascal compiler: compile speed, execution speed, and cross-compilation. The Free Pascal compiler benefits from the Pascal language structure and the steady advancements of the Pascal compiler design (spanning several decades) to compile large applications quickly, often in a matter of seconds. When compiling reference programs for performance metrics, Lazarus produces programs that exhibit near or similar performance when compared with the same programs written in C.

An application that developers create using Lazarus on one platform can potentially compile and execute on any platform for which a Free Pascal compiler exists. The usual caveats of the limitations of the target platform apply; however, for desktop applications a single source can target Mac, Linux, and Windows, usually with no modification (or very little modification). An example application is the Lazarus IDE which itself was created using the Lazarus IDE from a single code base and is available on all major platforms and also runs on the Raspberry PI.



☑ Open Source (GPL/LGPL)
☑ Drag & Drop Form Designer
☑ Delphi converter
☑ Written in Pascal for Pascal
☑ multi-platform
☑ Over 200 Components
☑ Many Frameworks
☑ Extendable through packages
☑ Converts from Delphi code
☑ Regular Releases


☑ LGPL licensed libraries allow you to create your own applications under any license you desire. Even commercial closed source.
☑ GPL licensed IDE
☑ Cross Platform IDE. Work on your favourite system.
☑ Platform independent projects out of the box. Simply copy your project to another platform and compile it.
☑ Build native binaries. Distribute your binaries without dependencies on any runtime environment.

Ease of use

☑ Installer, with all required files available
☑ Easy Drag & Drop Form designer to create powerful layouts
☑ Automatic synchronization between GUI-Forms and code
☑ Powerful code editor with syntax highlighting and code completion
☑ Navigate pascal source code
☑ Refactoring tools
☑ Integrated build system and debugger. Run, test and debug your projects from the IDE


☑ Open Source. You can add or modify existing code and components to meet your requirements
☑ Lazarus package system allows to install 3rd party add ons for more components or to extend the IDE
☑ Several database frameworks to meet your requirements
☑ Reporting and Charting
☑ A choice of Networking libraries available.
☑ Utf8 and i18n support. Translate your projects.
☑ Many more components. Build in and for download

Cross Platform

Lazarus runs on Windows, MacOS, Linux and many other platforms. Even on Raspberry Pi! The programs you create also runs on these platforms. Enjoy the same experience on your favorite OS. See Installing Lazarus for OS-specific instructions for installation.

Powerful, Fast

Lazarus is a capable IDE for handling large projects. Its compiler FPC is being constantly developed to improve performance. As an example for the project size the IDE can handle, and the performance of the resulting application: The Lazarus IDE itself is developed using Lazarus.
Drag and Drop Form Designer

Lazarus has a graphical form designer with guidelines for aligning with adjacent components. There are numerous components for almost every software imaginable, already ready to be used. Further components can be added to the IDE by Lazarus Package Files (LPKs).


Lazarus form designer uses LCL (Lazarus Component Library) which is especially designed for cross platform usage. Building your project for different platforms will give you native look and feel on each platform. There are no changes to the project needed.

Modern, Object oriented language

Lazarus uses Free Pascal as its language which is an Object Pascal dialect. It is constantly developed to integrate new features that can be expected in modern programming languages.

Easily Extendable

Hundreds of developers are developing and maintaining their Lazarus Libraries and Lazarus Packages (LPKs). You can find almost any kind of library that you may need.

Open source

Lazarus is open source and the core libraries are distributed under LGPL with the extra permission of static linking. So you can create non-commercial and commercial applications with it.

Various Frameworks are available which saves your time on certain codebase.

And more...