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OnlineGDB
onlinegdb.com β€Ί online_pascal_compiler
Online Pascal Compiler - online editor
OnlineGDB is online IDE with pascal compiler. Quick and easy way to run pascal program online.
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OneCompiler
onecompiler.com β€Ί pascal
Pascal Online Compiler
Write, Run & Share Pascal code online using OneCompiler’s Pascal online compiler for free. It’s a straightforward, accessible way to learn and experiment with Pascal programming right from your browser.
Discussions

Online Pascal editor
First two to show up on a google search; https://onecompiler.com/pascal https://www.onlinegdb.com/online_pascal_compiler More on reddit.com
🌐 r/pascal
11
10
June 15, 2025
Say what is a good Pascal compiler to get started coding in this language in 2024?
Freepascal compiler with Lazarus IDE is a top choice. It will be like programming Object Pascal with Delphi. With the visual components, it's easier than Turbo Pascal. Check out the "about" info for this group. More on reddit.com
🌐 r/pascal
16
19
October 12, 2024
Online Pascal Code Beautifier
I've made an online Pascal code beautifier (formatter) based on JCF-CLI . Please note that JCF (Jedi Code Formatter) only works on a full and correct Pascal program. It does not work on snippets. So, if you want to format a code snippet, simply add program test; at the first line and put your code between begin end. pair, to make it a complete Pascal program. I hope this small utility would help any Pascal programmers out there. 😊 More on reddit.com
🌐 r/pascal
9
7
February 23, 2018
Free Pascal ROCKS! It is seriously good for building robust, thread-safe web-applications!
Do you know that Free Pascal has a sister project that is able to convert (transpile) object pascal to javascript? It's called pas2js . That means you could write the front side of your web application using the lovely object pascal language as well. So you could (almost) entirely ignore the javascript. Isn't that awesome? 😊 More on reddit.com
🌐 r/pascal
16
35
November 25, 2019
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JDoodle
jdoodle.com β€Ί execute-pascal-online
Online Pascal Compiler
JDoodle is an Online Compiler, Editor, IDE for Java, C, C++, PHP, Perl, Python, Ruby and many more. You can run your programs on the fly online, and you can save and share them with others. Quick and Easy way to compile and run programs online.

free compiler and IDE for Pascal and ObjectPascal

Free Pascal Compiler (FPC) is a compiler for the closely related programming-language dialects Pascal and Object Pascal. It is free software released under the GNU General Public License, with exception clauses that … Wikipedia
Factsheet
Initial release 1997; 28 years ago (1997)
Stable release 3.2.2
/ May 20, 2021; 4 years ago (2021-05-20)
Factsheet
Initial release 1997; 28 years ago (1997)
Stable release 3.2.2
/ May 20, 2021; 4 years ago (2021-05-20)
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Free Pascal
freepascal.org
Free Pascal - Advanced open source Pascal compiler for Pascal and Object Pascal - Home Page
Free Pascal is a mature, versatile, open source Pascal compiler. It can target many processor architectures: Intel x86 (16 and 32 bit), AMD64/x86-64, PowerPC, PowerPC64, SPARC, SPARC64, ARM, AArch64, MIPS, Motorola 68k, AVR, and the JVM.
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TutorialsPoint
tutorialspoint.com β€Ί compilers β€Ί online-pascal-compiler.htm
Online Pascal (FPC) Compiler & IDE - Free Pascal programming Tool
Free online Pascal (FPC) Compiler and IDE. Write, compile, run and debug Pascal code online. No installation required. Supports debugging, code sharing, and multiple examples.
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Free Pascal
freepascal.org β€Ί docs.html
Free Pascal - Online documentation
The Free pascal 2.2 manuals have been translated to German by C&L, and can be purchased from the C&L website.
Find elsewhere
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CodeConvert AI
codeconvert.ai β€Ί pascal-code-generator
Online Pascal Code Generator
Free AI Code Generator for writing Pascal code. Generate high quality Pascal code with a click of a button.
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Alphacodingskills
cg.alphacodingskills.com β€Ί compile-pascal-online.php
Online Pascal Compiler
Online Pascal Compiler, Execute your Pascal code online - Run, Modify and Practice Pascal programming online using browser only.
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Lazarus
lazarus-ide.org
Lazarus Homepage
Lazarus is a professional open-source cross platform IDE powered by Free Pascal
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SourceForge
sourceforge.net β€Ί projects β€Ί freepascal
Free Pascal Compiler download | SourceForge.net
Download Free Pascal Compiler for free. Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler. 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; ...
Rating: 4.9 ​ - ​ 63 votes
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Free Pascal
freepascal.org β€Ί download.html
Free Pascal - Download
Privacy statement. Copyright Free Pascal team 1993-2025.
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The Free Country
thefreecountry.com β€Ί compilers β€Ί pascal.shtml
Free Pascal Compilers, Free Delphi Compilers (thefreecountry.com)
January 5, 2021 - Pascal is a general purpose procedural computer language created by Niklaus Wirth, originally intended as a tool to teach students structured programming. Some modern incarnations of the language include object oriented extensions. Listed on this page are free Delphi and Pascal compilers for a number of platforms.
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Bejson
bejson.com β€Ί en β€Ί runcode β€Ί pascal
Online running Pascal
Pascal online code runner, allows testing Pascal code. Enter a snippet of Pascal code in the editor and click compile to see the results.
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Reddit
reddit.com β€Ί r/pascal β€Ί say what is a good pascal compiler to get started coding in this language in 2024?
r/pascal on Reddit: Say what is a good Pascal compiler to get started coding in this language in 2024?
October 12, 2024 -

I'm old guard, learned Pascal as my second (class of) language in the early nineties on the TRS-80.

I've learned and professionally coded in many dozen languages since then, but I'm finding that I get sick of the constant meaningful punctuation (such as curly braces, semicolons) and abbreviations (sub, def, func, fun, etc) that I have to memorize and that's always different between different languages. I miss the days of fully spelled out English words as primary language constructs.

So if I wanted to code either for the Linux command line or for Windows with support for creating GUIs (or for something that compiles down into JS or WASM for front end web use) (also not needing something that does all three, just something that lives in at least one

My son tried researching this a bit, and all he could report back was that there was some version of Pascal that was ~20 years old and could only be obtained through an untrusted distribution site with viruses or something like that. Not sure which variant he might have found or whether said concerns had any meat to them, but my skimming today suggests that there are a dozen or more options out there and I'd like to see which have the best reputation and support.

EDIT: Consensus seems to be FPC+Lazurus with Delphi as a close second.

A friend of mine made 3D Clipboard in Delphi a metric forever ago, so it's good to know that platform remains relevant. But I'll check out FPC+Laz first.

Thank y'all for your quick responses! 😁