Top Welcoming Open-Source Pascal Repositories

OpenSource RESTful ORM/SOA/MVC ToolBox for Delphi and FreePascal

The free and open source karaoke singing game UltraStar Deluxe, inspired by Sony SingStar™

Double Commander is a free cross platform open source file manager with two panels side by side.

SynEdit is a syntax highlighting edit control, not based on the Windows common controls.

Manage your Active Directory (users, DNS, sites & services) from Linux, macOS or Windows. Open source RSAT alternative, Samba AD friendly.

Fast, opinionated, minimalist web framework for Delphi

Dext - Modern Full Stack Framework for Delphi

Goverlay is an easy graphical interface to configure linux gaming applications

🧲 A feature rich cross platform Transmission BitTorrent client. Faster and has more functionality than the built-in web GUI.

Virtual Treeview is a Delphi treeview control

MARS-Curiosity Delphi REST Library

Bhyve management GUI written in Freepascal/Lazarus

Turbo Pascal 3.0-compatible compiler that generates machine code for classic and modern Z80 machines (currently CP/M, the Sinclair ZX Spectrum 48K/128K/Next, and the Agon Light/Console8).

CAI NEURAL API - Pascal based deep learning neural network API optimized for AVX, AVX2 and AVX512 instruction sets plus OpenCL capable devices including AMD, Intel and NVIDIA.

Crypto for Modern Object Pascal

Multi-line editor control, with syntax highlighting, for Lazarus

Fallout 2 tweaks

Keyman cross platform input methods system running on Android, iOS, Linux, macOS, Windows and mobile and desktop web

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

Fallout 1 to 2 engine conversion

Delphi translations for Microsoft Media Foundation and related API's

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.

Mad Pascal Compiler for 6502 (Atari XE/XL, C64, C4Plus, Neo6502)

Orpheus is an award-winning UI toolkit for Embarcadero Delphi & C++Builder

WPP4Delphi is an open-source project with the aim of exporting functions from WhatsApp Web for Delphi, which can be used to support the creation of any interaction.

Cross-platform (desktop, mobile, console, web) 3D and 2D game engine. Powerful visual editor. Support for glTF, X3D, IFC and more. Fast clean code using modern Pascal. Free and open-source.

AWS (Amazon Web Services) SDK for Delphi.

FastMM is a fast replacement memory manager for Embarcadero Delphi applications that scales well across multiple threads and CPU cores, is not prone to memory fragmentation, and supports shared memory without the use of external .DLL files.

Free Zip / Unzip software and Rar file extractor. Cross-platform file and archive manager. Features volume spanning, compression, authenticated encryption. Supports 7Z, 7-Zip sfx, ACE, ARJ, Brotli, BZ2, CAB, CHM, CPIO, DEB, GZ, ISO, JAR, LHA/LZH, NSIS, OOo, PAQ/LPAQ, PEA, QUAD, RAR, RPM, split, TAR, Z, ZIP, ZIPX, Zstandard.

Monte Carlo eXtreme (MCX) - Physically accurate and validated GPU ray-tracer

The AI Operating System for Delphi. 100% native framework with RAG 2.0, autonomous agents, MCP protocol, and universal LLM connector. Supports OpenAI, Claude, Gemini, Ollama, and more. Delphi 10.4+ (limited), full support from Delphi 12 Athens.

Robber is open source tool for finding executables prone to DLL hijacking

The music composition suite for the Nintendo Game Boy

MyHomeLib – комп'ютерна програма для керування домашньою бібліотекою електронних книг. MyHomeLib може використовуватися не тільки для каталогізації колекції файлів з електронними книгами, але і як клієнт для роботи з бібліотекою Лібрусек та іншими бібліотеками на движку Лібрусек (Флібуста та іншими подібними).

To manage retro floppy disc images

Git and SemVer Info from MSBuild, C# and VB

Linux logging program for amateur radio operators

A DLL for forcing Discord to use a specified proxy (HTTP/SOCKS5) for TCP connections. Bypasses local restrictions on voice chats.

TaurusTLS provides OpenSSL 3.x and 4.x support for Indy - Internet Direct

RDP Wrapper Library

A lightweight client for managing MariaDB, MySQL, SQL Server, PostgreSQL, SQLite, Interbase and Firebird, written in Delphi and Lazarus/FreePascal

Lots and lots of "goodie" functions and 70 visual controls. More than 15 years of development have been put in this library. The library also wants to be a lightweight replacement for the mammoth Delphi Jedi library.

Alcinoe empowers developers to build fast, modern apps without the usual complexity or performance bottlenecks. It keeps the focus on innovation—not tool constraints—delivering top performance, deep customization, and great cross-platform UX while staying independent of GAFA ecosystems.

Simba is a program used to repeat certain (complicated) tasks. Typically these tasks involve using the mouse and keyboard. Simba is programmable, which means you can design your own logic and steps that Simba will follow, based upon certain input such as colors on the screen.

Skia4Delphi is a cross-platform 2D graphics API for Delphi platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

A simple and powerful multithreading library for Delphi

A GUI for ExifTool

Delphi cross platform socket library

Inno Setup is an open-source installation builder for Windows applications by Jordan Russell and Martijn Laan. Since its introduction in 1997, Inno Setup has been trusted by developers and organizations of all sizes to reliably deploy software to millions of PCs worldwide.

A memory manager for Delphi and C++ Builder with powerful debugging facilities