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30,057 projects in the catalog.

Free Pascal, Lazarus and Delphi components, libraries and programs from GitHub, SourceForge, Codeberg, GitLab and more. Rate them, mark what looks interesting, and talk about them on their benches.

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pascal-p2

This was the 2nd version of the Pascal-P compiler created by Niklaus Wirth's group at ETH Zurich, termed Pascal-P2. This was the original portable compiler for Pascal. Niklaus Wirth led an effort to gather and reconcile the different sources for the Pascal-P compiler in existence, which were collectively referred to as Pascal-P1.These were then published as part of a porting kit for the compiler. Pascal-P2 is a "Running history project". It is a historical record, but still runs on modern computers. Pascal-P2 exists mainly for historical reference. It was improved at ETH Zurich to become Pascal-P4, and brought to full ISO 7185 standard status as Pascal-P5. You can find all of the Pascal-P versions here in sourceforge: https://sourceforge.net/projects/pascal-s/ https://sourceforge.net/projects/pascal-p2/ https://sourceforge.net/projects/pascalp4/ https://sourceforge.net/projects/pascalp5/ https://sourceforge.net/projects/pascal-p6/

  • Quiet
  • Application
  • SourceForge
  • Public Domain

Language Tools

pascal-p5

This is the 5th version of the Pascal-P compiler from Zurich. This is the Pascal-P4 compiler modified to be ISO 7185 Pascal compilant, both in the the implementation language, and in the language it processes. Pascal-P was an implementation kit, created between 1972 and 1974, for the original language Pascal. The source for the original compiler was passed around and modified quite a bit, but Niklaus Wirth noted that it was very popular, and represented a good method to popularize the language. He gathered the source into a clean version called Pascal-P2. The Zurich group then created an improved version called Pascal-P4. You can find all of the Pascal-P versions here in sourceforge: https://sourceforge.net/projects/pascal-s/ https://sourceforge.net/projects/pascal-p2/ https://sourceforge.net/projects/pascalp4/ https://sourceforge.net/projects/pascalp5/ https://sourceforge.net/projects/pascal-p6/

  • Quiet
  • Application
  • SourceForge
  • Public Domain

Language Tools

pascal-language-server

LSP server implementation for Pascal (abandoned, these are active forks: https://github.com/genericptr/pascal-language-server and https://github.com/castle-engine/pascal-language-server)

  • Archived
  • Application
  • Lazarus
  • GitHub
  • ★ 66
  • GPL-3.0

Language Tools

pascal p5c

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)

  • Quiet
  • Application
  • SourceForge
  • Public Domain

Language Tools

PAS2PHP

PAS2PHP will translate a large subset of Object Pascal to PHP, allowing you to write web applications using Lazarus/FreePascal, and then run the application on a standard HTML/PHP server. Over the last week, a lot of work has gone into PAS2PHP. Most of the major issues are resolved. There are still a number of incompatibilities which are either not fixable, or have simple workarounds. As of v0.5, you should be able to write entire PHP applications in Pascal. The key to coding for PAS2PHP is to understand the limitations of PHP. Read the example code provided, and always check the outputed PHP code to understand how this works. As a guide to what PAS2PHP can achieve... my web site is written in Pascal, and then converted to PHP. (The code is in the source package). PAS2PHP uses the Pascal Parse Tree Classes (PasTree) which comes with FreePascal, and therefore the parsing limits are defined by this library.

  • Quiet
  • Application
  • Lazarus
  • SourceForge
  • GNU Library or Lesser General Public License version 3.0 (LG

Language Tools

Pascal XE

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

  • Quiet
  • Application
  • Lazarus
  • SourceForge
  • MIT License

Language Tools

Pascal-Sonic

Sonic game made using the Object Pascal programming language, which allows playing custom-drawn levels.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 36
  • MIT

Games and Game Engines

pascal-jsonrpc-lite

Parse and Serialize JSON-RPC v2.0 messages in free-pascal or Delphi application. See enhanced version https://github.com/r3code/pascal-jsonrpc-lite-2

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 19
  • GPL-3.0

Networking

pascal

Este repositório contém códigos e anotações sobre meu aprendizado de Turbo Pascal. Aqui, você encontrará exemplos práticos, exercícios e conceitos que estou explorando enquanto aprendo essa linguagem clássica de programação.

  • Active
  • Other
  • GitHub
  • ★ 1
  • MIT

Learning and Examples

Pascal-FC

A small bootstrapable pascal compiler/interpreter based on pascals, with a focus on concurrency. Originally from Alan Burns and Geoff Davies https://www-users.york.ac.uk/~ab38/pf.html.

  • Active
  • Library
  • GitHub
  • ★ 1

Networking

pascal-webui

Use any web browser as GUI, with Pascal in the backend and HTML5 in the frontend.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 84
  • MIT

Bindings

PascalFramework

Pascal Framework is a foundational library for Free Pascal, Lazarus and Delphi applications.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 1
  • MIT

Bindings Language Tools

Pascal

New Stanford Pascal Compiler

  • Active
  • Application
  • GitHub
  • ★ 65

Language Tools

pascal-p2

A mirror of Niklaus Wirth's P2 Pascal Compiler

  • Archived
  • Application
  • GitHub
  • ★ 9

Language Tools

pasweave

A modern documentation generator for Free Pascal projects.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 7
  • MIT

Language Tools

pasvulkan

Vulkan header generator, OOP-style API wrapper, framework and prospective Vulkan-based game engine for Object Pascal

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 230
  • Zlib

Bindings Graphics

pascal-process

Pascal library for running processes and redirecting their output.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 35
  • MIT

System

pascal-mcp-sdk

FreePascal-native MCP (Model Context Protocol) server library — expose tools, resources, and prompts from Pascal programs to AI agents. Zero third-party dependencies, stdio + Streamable HTTP.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 2
  • MIT

Networking

pasllm

PasLLM - LLM inference engine in Object Pascal (synced from my private work repository)

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 108
  • AGPL-3.0

Science

pascal-jsonrpc-lite-2

Parse and Serialize JSON-RPC v2.0 messages in free-pascal or Delphi application. Enhanced realizaiton of previous https://github.com/r3code/pascal-jsonrpc-lite

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 18
  • GPL-3.0

Networking

pascal-adlib

Turbo Pascal / C Adlib / Sound blaster low-level OPL2 chipset API

  • Quiet
  • Library
  • GitHub
  • ★ 17

Multimedia

pascal-gba

Pascal toolchain for Game Boy Advance development: FPC cross-compilation, a Pascal-written GBA emulator with headless replay and debugging, and an AI-image-to-GBA asset pipeline

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 1
  • MIT

Games and Game Engines Graphics

pascal-md5

MD5 hash function in Pascal for no good reason

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 1
  • MIT

Cryptography

Pascal-Temp-Converter

Pascal Temp Converter A tiny Pascal program made just for fun to test Pascal. Converts between Celsius and Fahrenheit. Feel free to run it, modify it, or use it however you want – public domain.

  • Active
  • Library
  • GitHub
  • ★ 1

Other

PasClaw

Ultra-lightweight native AI agent framework written entirely in Object Pascal for Delphi and Free Pascal, designed for performance, portability, and extensibility.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 67
  • MIT

Science

pascal-amqp-faa

AMQP 0-9-1 client and broker for Free Pascal/Lazarus and Delphi in a single codebase. The embeddable broker (TAMQPServer) runs inside your application with no RabbitMQ install: exchanges, publisher confirms, mandatory/return, TTL, dead-letter, priorities and optional durability via WAL. MIT.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 9
  • MIT

Networking

Pascal-FC

Pascal-FC; A pascal implementation for learning concurrent programming. By Alan Burns and Geoff Davies.

  • Quiet
  • Application
  • GitHub
  • ★ 9

Language Tools

Pascal-S

Pascal-S compiler/interpreter for Pascal subset

  • Quiet
  • Application
  • GitHub
  • ★ 9

Language Tools

PasPDQSort

Orson Peters' PDQSort algorithm translated to Free Pascal.

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 9
  • MIT

Other

Pascal NUCLEUS (GUI/VM)

NOTE: As of r816, Nucleus source code is licensed under GPLv3. (8th Oct 2017) Nu|cleus [ˈnjuːklɪəs] - The central and most important part of an object, movement, or group, forming the basis for its activity and growth. This is yet another long-term project (YALP?). The aim is to write a portable GUI/OS for Atari ST, Amiga and DOS. The code must be small, fast and support modern GUI features. ie: Embedded component controls. The code current compiles with Highspeed Pascal (Atari ST) or FreePascal. I hope to have it compiling for the Amiga (also using Highspeed Pascal), and supporting a built in p-code compiler/interpreter for cross platform development.

  • Library
  • Lazarus
  • SourceForge
  • GNU General Public License version 3.0 (GPLv3)

GUI containers System

PascalType2

Mirror of the PascalType2 repository on Gitlab: https://gitlab.com/anders.bo.melander/pascaltype2

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 8
  • MPL-2.0

Graphics

Pascal-P6

6th version of Niklaus Wirth's original Pascal language compiler system

  • Active
  • Application
  • GitHub
  • ★ 46

Language Tools

pascal-stack

Simple stack class to be used in Delphi (Pascal).

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 6
  • MIT

Other

PasLibVlc

PasLibVlc is interface to VideoLAN libvlc.dll and VCL player component for Delphi / FreePascal based on VideoLAN

  • Quiet
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 35
  • MIT

Bindings Multimedia

pasjson

A unified JSON library for both Object-Pascal ecosystems (Delphi and FreePascal)

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 34

Other

pascal-pipes-faa

Cross-platform inter-process communication for Delphi 12+ (Win64) and FPC/Lazarus (Linux x86_64/ARM64): the same API at three scopes — local IPC (Named Pipe/UDS), TCP and TLS with optional mTLS. Synchronous Request-Reply, topic pub/sub with wildcards and retain, AutoReconnect and thread-safe dispatch (pool/serialized/main thread).

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 6
  • MIT

System

pascal-dosvideo

Turbo Pascal 7 BGI / Mode-X routines (archive)

  • Quiet
  • Library
  • GitHub
  • ★ 4
  • BSD-3-Clause

Graphics