ALB's blog hosts the Freepascal compilers for AmigaOS, MorphOS and AROS, some other applications like Mapparium, GPSTool, and EdiSyn, and now he has even added an online Pascal compiler for AmigaOS, MorphOS and AROS.
Via a web interface, you can enter your Pascal code, choose the destination platform, click "Compile", and download your executable file.
There are two versions of the online Freepascal compiler: one for current browsers with full JavaScript, and one for older browsers (IBrowse, etc.) using HTML only.
Here's a video showing the online compiler in action:
https://www.youtube.com/watch?v=RlUaCxR1Y2o
Head over to ALBs blog and check out some Pascal:
https://blog.alb42.de
Or go directly to the "FPC Online Editor/Compiler":
http://home.alb42.de/fpamiga/