Compilers

Pascal Compiler for the 8051 Microcontroller - Cross compiler for the Intel 8051/8052 microcontroller. Accepts standard Pascal code and avoids having to program in assembly. Freeware.
http://www.geocities.com/SiliconValley/Campus/9592/

Nemesis Pascal - A Pascal interpreter. It's Delphi/Kylix compatible. Nemesis Pascal uses internally a modified version of the JEDI Pascal Interpreter. It's cross-platform (currently Windows and Linux) and includes Virtual Machine, IDE (RAD), Web Scripting Tool. [Open source, GPL and MPL]
http://npascal.sourceforge.net

Canterbury Pascal - Compiles Pascal programs directly into Java byte code. Also translates Pascal source into Java.
http://www.mhccorp.com/pasjava.shtml

Pascal Pro compiler page - A free, open source, 32-bit Pascal compiler that produces assembly code for the 386 and above chips.
http://www.fortunecity.com/skyscraper/sql/39/

Framework Pascal - 32-bit Pascal compilers for DOS, OS/2, and Windows 9x/NT. Multi-target edition allows you to compile to any platform. Commercial software, but limited demo edition is available for download.
http://www.frameworkpascal.com/

P4 Pascal Implementation - Complete implementation of the P4 Pascal compiler and interpreter. Source for the compiler is available in C and Pascal.
http://homepages.cwi.nl/~steven/pascal/

Alice Pascal - A syntax directed editor, interpreter and IDE for Pascal. Free source code (linux) plus binaries for IBM PC and Atari ST.
http://www.templetons.com/brad/alice.html

HP OpenVMS Pascal - Was DEC Pascal, then Compaq Pascal, optimizing compiler runs on VAX and Alpha CPUs, OpenVMS and Tru64 Unix OSs, meets Federal Information Processing Standard Publications standard FIPS-109. Descriptions, documents, news, support.
http://h71000.www7.hp.com/commercial/pascal/pascal_index.html

Prospero Extended Pascal - Windows 9x/NT Pascal compiler implementing the Extended Pascal language. Includes IDE, debugger, make utilities, and documentation.
http://www.prosperosoftware.com/e32iw.html

Irie Pascal - A compiler that generates portable byte-code executables from Pascal source files, and an interpreter that runs the byte-code executables at Windows, Linux, FreeBSD, Solaris/x86, and Solaris/Sparc. The Windows Edition includes an Integrated Development Environment (IDE).
http://www.irietools.com/

Free Pascal Compilers - List of free Pascal compilers and development environments with useful descriptions.
http://www.thefreecountry.com/compilers/pascal.shtml

Pascal-scm for Atmel AVR - E-LAB Embedded Pascal for Atmel AVR micro-controller.
http://www.elab-pascal.de/AVRco/index_en.html