许可: GPL/LGPL
    Lazarus 是一个 Free Pascal 类似于 Delphi 的类库. Free Pascal 是一个 (L)GPL'公约下的可以运行在 Linux ,Win32,OS/2,68K 以及更多系统下的编译器.Free Pascal 被设计兼容 Delphi 语法, 即OOP.
    Lazarus 将让你方便的像使用 Delphi 一样在所有的平台设计程序. IDE 将最终成为像 Delphi 一样的 RAD.

Lazarus官网：www.lazarus.freepascal.org

试用了之后发现编译速度很慢,而且默认编译的体积比较大,使用strip --strip-all处理一下,体积能够减小60%.

这个是它的一些Screenshots

IDE Windows	Compiling	Object Inspector - Properties	Object Inspector - Events	Debugger - All Windows	Debugger - Breakpoints
Debugger - Callstack	Debugger - Locals	Debugger - Watches	Compiler Options - Search Paths	Compiler Options - Parsing	Compiler Options - Code Generation
Compiler Options - Linking	Compiler Options - Other	Editor Options - General	Editor Options - Display	Editor Options - Key Mappings	Editor Options - Color
Editor Options - Code Tools	Environment Options - Desktop	Environment Options - Files	Environment Options - Backup	External Tools	Replace Dialog
Run Parameters	CodeTools Defines Editor	CodeTools Options - General	CodeTools Options - Code Creation	CodeTools Options - Line Splitting	CodeTools Options - Space
Sample of Lazarus running in Mac OSX

free pascal 直接的下载地址是:http://jaist.dl.sourceforge.net/sourceforge/lazarus/fpc-2.0.2a.i386-win32.exe
lazarus 直接的下载地址是:http://jaist.dl.sourceforge.net/sourceforge/lazarus/Lazarus-0.9.16-20060528-win32.exe