Open Source Pascal Compilers

MinGW: A native Windows port of the GNU Compiler Collection (GCC), with freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All of MinGW's software will execute on the 64bit Windows platforms.

A 32/64/16-bit Pascal compiler for Win32/64/CE, Linux, Mac OS X/iOS, Android, FreeBSD, OS/2, Game Boy Advance, Nintendo NDS and DOS; semantically compatible with Delphi, Borland Pascal and Mac Pascal (partially) with extra features, e.g. operator overloading.

Turbo Pascal (With DOSBox) (TPWDB) is a free and open source compiler and Integrated Development Environment (IDE) for Pascal language on Windows 64 Bit and 32 Bit. Using basic Pascal programming, many functions, no need to install multiple steps and integrate some other tools.

Pascal XE is an IDE for Pascal programming, it is user friendly and designed specially for beginners in programming. Pascal XE includes 3 free compilers: - Virtual Pascal Compiler 2.1.279 (default) - Free Pascal Compiler 3.0.4 - GNU Pascal Compiler 20070904

p5c is a fast portable iso standard pascal compiler. It is derived from the pascal p5 compiler and creates gnu c code instead of p-code. This makes it very fast since it uses gcc to generate native code. p5c is multi platform - it is easy to get up and running since you only need gcc to start. Using gcc enables extra tools like a static analyser and code coverage analyser. Execution profiling described in the blog here -> https://sourceforge.net/p/pascal-p5c/blog/2017/07/how-to-use-profiling-to-speed-up-p5c-pascal-programs It extends p5 by adding arbitrary set limits and conformant arrays. The project also contains p5x - pascal with extensions to the standard pascal language (underscores allowed in identifiers, otherwise in case statement, constant expressions, etc)

compiler for a Pascal like language that build Flash animation (SWF) FlashPascal2 is a more advanced free compiler availabe at http://flashpascal.execute.re/

Vector Pascal is a language targeted at SIMD multi-core instruction-sets such as the AVX and SSE2 or x86-64-v3. It has a SIMD compiler which supports parallel vector operations, loop unrolling, common sub expression removal etc. It is implemented in Java.

Action! is a programming language for the Atari 8-bit family of microcomputers. It features an integrated editor, a debugger, and a 6502 compiler. Action! was created by Clinton Parker and released on cartridge by Optimized Systems Software (OSS) in 1983. Its syntax is similar to that of ALGOL 68.  Action! is significant for its high performance, which allows games and graphics demos to be written in a high-level language without the use of hand-written assembly language code. Action! language constructs were designed to map cleanly to 6502 opcodes. In 2015, Clinton Parker released the Action! 3.6 source code to the public under the terms of GPL. This project is intended to preserve the Action! source code, provide fixes for known bugs, and add new features in version 3.7. Join us at AtariAge https://forums.atariage.com/topic/217770-action-source-code for questions and discussions. Check out https://atariwiki.org/wiki/Wiki.jsp?page=Action for related information.

Port of the Pascal-P4 compiler to Free Pascal and Delphi. The source code of Pascal-P4 is commented in the book "Pascal Implementation" by Steven Pemberton and Martin Daniels. The book is readable online at http://homepages.cwi.nl/~steven/pascal/

A small educational compiler for a subset of the Pascal language. A native x86 machine code generator directly emits COM executables for MS-DOS. The compiler supports VGA graphics, floating-point arithmetic, etc. 32-bit Pascal source is provided.

RubyScript2Exe transforms your Ruby script into a standalone Windows or Linux executable. You can look at it as a "compiler", for it collects all necessary files to run your script on an other machine.

Development of a fully-conforming implementation of a compiler for the Sirius programming language.

This is the Pascal edition of ACS script command line compiler for id-tech1 games. It can be used to compile ACS scripts for DelphiDoom source port

FORTH-like language compiler for AVR ATMega

Iterpreter of Pascal language which may help programmers doing ther job. Include basic operations in/out, declarations of variables.

AllInOneRuby creates an Windows or Linux executable that includes both the Ruby interpreter and the runtime libraries. Why? Because it's sometimes not easy, or allowed to do a complete Ruby installation. That's where AllInOneRuby comes in.

NOTE: Project has been delayed due to other tasks. I will return to this project in 2018. This is a new project which will be available soon. I wanted to bring AmigaE back to life, so I wrote an E to C transpiler which creates C code compatible CC65/CMOC/VBCC/BCC/GCC/TCC/LCC etc. The aim is to bring AmigaE to every possible platform in one hit.

Le projet Atlantis est une collection de composants et de bibliothèques pour Lazarus. The Atlantis project is a collection of components and libraries for Lazarus.

Experimental compiler for new .NET language written in C#. Based on Pascal-like Microsoft Navision C/AL programming language. Dedicated for working with databases. It has a built-in O-R mapper. Current implementation works with Microsoft SQL Server DBMS

An open source compiler for the Crystal programming language.

Draak is a multi-language, macro compiler, meaning all syntax and code generation is defined in a single file. Draak is a single binary that is able to compile any context free language (like C, Pascal, Java) for any platform with only 1 file.

DURIAN is a Free Delphi Web Application Server for make interactive dynamic web documents in the Pascal server-side html-embedded scripting language for Windows (Delphi) and Linux (Kylix).

Free Pascal Compiler for Delphi

A free pascal compiler targeting the Microsoft .NET and Mono platform; Full compatibility to the Borland Delphi.NET compilers is one of the main goals.