Open Source Free Pascal Software Development Software

Free Pascal Software Development Software

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    Rent Manager Software

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  • 1
    Lazarus

    Lazarus

    Rapid applications development tool and libraries for FPC

    The Lazarus IDE is a stable and feature rich visual programming environment for the FreePascal Compiler. It supports the creation of self-standing graphical and console applications and runs on Linux, FreeBSD, MacOSX and Windows.
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    Downloads: 14,171 This Week
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  • 2
    Clipper

    Clipper

    Polygon and line clipping and offsetting library (C++, C#, Delphi)

    This library is now obsolete and no longer being maintained. It has been superceded by my Clipper2 library - https://github.com/AngusJohnson/Clipper2.
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    Downloads: 6,364 This Week
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  • 3
    Free Pascal Compiler

    Free Pascal Compiler

    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; semantically compatible with Delphi, Borland Pascal and Mac Pascal (partially) with extra features, e.g. operator overloading.
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    Downloads: 3,290 This Week
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  • 4

    ZeosLib

    Database components for Delphi, FreePascal/Lazarus, Kylix, C++ Builder

    Note: Delphi NextGen support (Android, iOS, OS X,) has been added the Zeos 8.0 development version. Supported compilers start with Delphi XE 10.2 Tokyo. For problems please contact us in the forums on https://zeoslib.sourceforge.io. The ZeosLib is a set of database components for MySQL, MariaDB, PostgreSQL, Interbase, Firebird, MS SQL Server, SAP Adaptive Server Enterprise and Adaptive Server Anywhere (previously Sybase), Oracle and SQLite for Delphi, FreePascal/Lazarus and C++ Builder.
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    Downloads: 311 This Week
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    AI-powered conversation intelligence software

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  • 5
    TurboPower Abbrevia

    TurboPower Abbrevia

    Advanced data compression toolkit for Delphi and C++Builder

    Abbrevia is a compression toolkit for Delphi, C++Builder, Kylix, and Free Pascal. It supports compressing and decompressing PKZIP, Microsoft CAB, tar, gzip, and bzip2 archives, and can create self-extracting executables. On Windows it also provides Delphi wrappers for the LZMA, Bzip2, and WavPack SDKs, and PPMd decompression. Abbrevia also has several visual controls that simplify displaying and manipulating archives, including treeview and listview components.
    Downloads: 29 This Week
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  • 6
    This is a widget set to quickly develop cross-platform GUI software using the Free Pascal Compiler. It doesn't rely on large third party libraries - which makes fpGUI applications easy to deploy. Also included: help viewer, visual form designer.
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    Downloads: 21 This Week
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  • 7
    Vampyre Imaging Library

    Vampyre Imaging Library

    Image library for Object Pascal.

    Imaging is native Object Pascal (Delphi and FPC) image loading, saving and manipulation library. It is available for several platforms and does not require any third party dynamic libraries.
    Downloads: 18 This Week
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  • 8
    We are developing a set of Delphi components to communicate with a ModBus PLC over TCP/IP. The library provides components to implement both a ModBus master and a Modbus slave, and is based on the Indy component set (both Indy 9 and 10 are supported) De source code of the project has been moved to GitHub!
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    Downloads: 13 This Week
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  • 9
    Graphics32 is a graphics library for Delphi and Lazarus. Optimized for 32-bit pixel formats, it provides fast operations with pixels and graphic primitives. In most cases Graphics32 considerably outperforms the standard TBitmap/TCanvas methods.
    Downloads: 11 This Week
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  • 10
    Avocado programming language

    Avocado programming language

    Avocado Polish programming language

    The Avocado language is compiled and currently allows for the creation of console applications. Work on Avocado and the integrated development environment (IDE) began on February 19, 2025. A unique feature of this language is the ability to write commands in Polish and English, compiling code into .exe format. The language is freely available for commercial and non-commercial projects. The Avocado source code is available under the MIT License on GitHub. Avocado is transpiled to Free Pascal and then compiled by the FPC compiler, making it as fast as C or Rust, but with syntax reminiscent of Python. The Avocado IDE interface has been translated into 6 languages Official website: https://avocado-code.com/ Documentation: https://doc.avocado-code.com/ Source code https://github.com/Programista-Art/Avocado 🥑 Hey! If you like my programming language Avocado, support the project on Patronite 👉 https://patronite.pl/programista-art Every bit of support means a lot.
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    Downloads: 23 This Week
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  • 11
    MIDletPascal
    MIDletPascal is specifically suited for development of J2ME midlets. It's compiler translates Pascal source code directly into Java microedition bytecode.
    Downloads: 4 This Week
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  • 12
    "Windows Free Pascal IDE"

    "Windows Free Pascal IDE"

    Windows Free Pascal is a free source code editor for programmers

    "Windows Free Pascal IDE" is Copyright (c) 2014 dr Jaroslaw Szymanda Windows Free Pascal is a free source code editor for programmers of console applications. Designed primarily for students who begin to learn programming. They can quickly write and compile software using open source Pascal compiler developed by "(c) Free Pascal Team" (see http://www.freepascal.org). "Windows Free Pascal IDE" program is free software and can be redistributed without any restriction.
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    Downloads: 7 This Week
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  • 13
    AlgoSim

    AlgoSim

    AlgoSim : création, analyse et exécution des algorithmes

    AlgoSim un Logiciel de création, analyse, simulation et exécution des algorithmes. Il ne nécessite aucun apprentissage de langage de programmation. Ce logiciel n'utilise pas un éditeur de texte comme les logiciels classiques de programmation. Ce logiciel peut être utilisé par des débutants pour apprendre la programmation et exercer leurs connaissances. Il peut être utilisé par des professionnel pour tester leurs algorithmes, les vérifier et générer des programme présentables (pseudo-code ou programme Pascal) .
    Downloads: 18 This Week
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  • 14
    GPU,  a Global Processing Unit

    GPU, a Global Processing Unit

    A framework for distributed computing

    An extensible framework for distributed computing on P2P grids. We support peaceful free and open research and build an internet supercomputer. We render movies, solve Eternity puzzles, predict climate and improve a ~30 GHz cluster of clients.
    Downloads: 8 This Week
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  • 15
    Allegro.pas

    Allegro.pas

    Game library for Pascal

    Allegro.pas is a wrapper to use the Allegro Game Library with Pascal compilers (Delphi, Free Pascal, etc). Allegro is a cross-platform library intended for use in computer games and other types of multimedia programming. * Graphics: 2D and 3D, OpenGL and D3D. * Controls: Keyboard, mouse, joystick, gamepad... * Sound and music.
    Downloads: 5 This Week
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  • 16

    LMath library

    Math library for Free Pascal and Lazarus.

    LMath, based on DMath, is a mathematical library for FreePascal (FPC) and Lazarus. It is entirely written in Pascal and does not depend on external libraries. LMath provides routines and demo programs for numerical analysis, including mathematical functions, probabilities, matrices, optimization, linear and nonlinear equations, integration, Fast Fourier Transform, random numbers, curve fitting, statistics and graphics. It is organized s set of lazarus packages which makes it easily extensible and helps to include only really needed features in your project.
    Downloads: 14 This Week
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  • 17
    Simple Hex Viewer

    Simple Hex Viewer

    Simple Hex Viewer for Windows

    Simple Hex Viewer for Windows developed in FPC/Lazarus Source code repository: https://github.com/jval1972/SimpleHex
    Downloads: 13 This Week
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  • 18
    AL-IV

    AL-IV

    ALFOUR Programming language. Simple, safe, power, multi-platform.

    A programming language AL-IV (ALFOUR) is a high-level imperative object oriented programming language with minimal introduction level, easy porting to any platform claiming a very high level of safety and stability, with a controllable level of code protection, high efficiency of an executable code, full independence from a target platform, minimal enter level.
    Downloads: 12 This Week
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  • 19
    This little software can add or delete ressource in lazarus lrs file. It is based on the tools lazres but this soft is graphical software
    Downloads: 4 This Week
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  • 20
    vHDL Obfuscator GUI

    vHDL Obfuscator GUI

    vHDL Obfuscator is an small GUI to obfuscate and reformat HDL files

    VHDL and Verilog HDL are standards languages for hardware description. Sometimes is necessary to share the source HDL file but maintaining a little level of control and protection of the intellectual property. This tool generate obfuscated code that is almost unreadable to humans, but is still readable to compilers and simulators. This tool use GHDL (https://sourceforge.net/projects/ghdl-updates/), HDLObf (https://sourceforge.net/projects/hdlobf/), Icarus Verilog (https://sourceforge.net/projects/iverilog/) and was created in Lazarus (http://www.lazarus-ide.org/)
    Downloads: 4 This Week
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  • 21
    PiNote

    PiNote

    PiNote is a free source code editor that supports several languages.

    PiNote is a free source code editor that supports several languages. Running on Windows, Linux and Raspberry Pi. Written in free pascal and Lazarus IDE, use the SynEdit component with extended syntax highlighter modules. PiNote's many features include macro recording, code highlighting, encryption and/or decryption of text and files and more.
    Downloads: 11 This Week
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  • 22
    OPCClient

    OPCClient

    OPCCient для разработки SCADA (или подобного)

    OPCClient - это лиш копонент (написан под Lazarus на Free Pascal), предназначен для написания SCADA и др. програм сбора данных и управления (по OPC DA). Он занимается лиш сбором и передачей информации, остальное придётся писать самим. Проект на русском языке..
    Downloads: 10 This Week
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  • 23
    TRURL

    TRURL

    A suite of RPN calculators and a class library for Object Pascal

    TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator. TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". Class Libraries: • RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators • Segmitator: Library for virtual seven-segment displays Applications: • TRURL A: Simple demo app for the RPN Engine • TRURL B: RPN calculator in the design of the famous calculators by Dieter Rahms for Braun • TRURL G: Desktop RPN calculator inspired by the UI of the DSKY unit of the Apollo Guidance Computer (AGC)
    Downloads: 10 This Week
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  • 24
    Video Memory stress Test for Clean Environment
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    Downloads: 12 This Week
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  • 25

    LacaK Software

    LacaK's Freeware Software

    Various freeware software that I created. • EasyIS - lightweight information system for manufacturing companies. • Registratúrny denník • Penzión - software for hotels, guesthouses and hostels. • Správa úloh - task management software. • Preteky - software for race organizers. • Free Pascal - various free sources for Free Pascal compiler. More information at https://lacak.sourceforge.io/
    Downloads: 9 This Week
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