Lazarus
The professional Free Pascal RAD IDE
- Cross platform
- Drag & Drop Form Designer
- Open source (GPL/LGPL)
- Delphi converter
Version 4.0 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.
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, documentation and ideas. Our forums and mailing-list offer a space to ask questions and talk to users and the developers.
Recent Announcements
Lazarus Release 4.0 - May 05, 2025, 11:49:29 am
The Lazarus team is glad to announce Lazarus 4.0. This release was built with FPC 3.2.2. Here is the list of changes for Lazarus and Free...
Learn more...Lazarus Release Candidate 3 of 4.0 - March 25, 2025, 01:59:17 pm
The Lazarus team is glad to announce the third release candidate of Lazarus 4.0. This release was built with FPC 3.2.2. Here is the list...
Learn more...Lazarus in non-UTF8 mode (-dDisableUTF8RTL): does anyone still use this? - February 03, 2025, 07:04:21 pm
Hi, Long time ago, before codepage-aware ANSI strings existed in fpc, all strings in Lazarus were treated as being UTF8 encoded. With the...
Learn more...Lazarus Bugfix Release 3.8 - January 22, 2025, 02:56:28 pm
The Lazarus team is glad to announce the release of Lazarus 3.8. This is a bugfix release and was built with FPC 3.2.2. Here is the...
Learn more...Shop
A new lazarus handbook is released.
The Free Pascal and Lazarus foundation will receive 50% of the profits
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
Tip of the day
Use the leak viewer to find and fix memory leaks. Hint: You need to enable Heaptrc in the project options
Highlights
- Open Source
- Written in Pascal for Pascal
- Cross-platform
- Over 200 Components
- Extendable through packages
- Package Manager with Online Repository
- Many Frameworks
- Converts from Delphi code
- Regular Releases
Recent Forum Posts
Lazarus / Free Pascal
© 1993-2025 Lazarus and Free Pascal Team
