Lazarus is a cross-platform IDE built on top of the Free Pascal compiler that allows developers to write applications once that can run on multiple platforms including Windows, Mac, Linux. It uses drag and drop visual design similar to Delphi and includes the Lazarus Component Library (LCL) which provides common controls and abstracts away differences between operating systems. An example application called PicPicker is shown running on Linux, Windows, and Mac demonstrating true cross-platform capabilities.

1. Cross-platform native development with Lazarus. Tristan Linnell [email_address]

2. Lazarus A full IDE on top of the Free Pascal Compiler.

3. RAD IDE, similar to Delphi.

4. ”Drag and drop”, event driven design.

5. Cross-platform: Win, Mac, Linux, FreeBSD, Win CE... ”Write Once, Compile Anywhere”.

6. Multiple Widget Sets: Win, QT, GTK, Carbon...

7. Produces standard executables, shared libraries and object files.

8. Free Pascal Compiler (FPC) Object Oriented modern Pascal dialect.

9. Cross-platform.

10. Written in FPC (itself).

11. Supports multiple dialects (Object Pascal, FPC, Delphi, Turbo Pascal, Mac Pascal...)

12. Many built-in functions in the Run Time Library (RTL).

13. Lazarus

14. Lazarus Component Library Or LCL . Similar to Delphi's VCL .

15. Collection of standard and advanced controls.

16. Abstracts away the Widgetset's and OS's APIs.

17. Provides extra functions for cross-platform development, minimising use of {$IFDEF} s