Sign in Join

Live chat for Free Pascal, Lazarus, Delphi and every Pascal programmer.

Catalog

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.

Random project How the catalog works

bigdecimalmath

Pascal library for arbitrary precision BCD floating point numbers

  • Quiet
  • Library
  • GitHub
  • ★ 28

Science

Neslib.Half

Half-Precision Floating-Point for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 12

Science

UnleashedPascal-BigInts

Arbitrary-precision integers, decimals and rationals for Unleashed Pascal: signed BigInt, unsigned UBigInt, BigDecimal and BigRational in one dependency-free unit, typically within 1-4x of GMP.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 3
  • MPL-2.0

Science

ADAPT

Advanced Developer Async Programming Toolkit

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 46

Other

DelphiBigNumberXLib

Arbitrary Precision Library for Delphi with Support for Integer and Floating Point Computations.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 26
  • MPL-2.0

Science

pasdblstrutils

Pascal library for cross-compiler consistent and exact conversion between double-precision floating point number values and strings

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 13

Science

GNU-MP-for-FreePascal

The GNU Multiple Precision Arithmetic Library. Headers for FreePascal

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 2
  • GPL-3.0

Bindings

TBigDecimal

Arbitrary-precision decimal arithmetic for Free Pascal (TBigDecimal record, rounding modes, Sqrt/Exp/Ln/Pow, combinatorics, Gamma)

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 2

Science

systools

A library of utility routines & classes covering bar codes, sorting, money routines, logging, high-precision math, a run-time math expression analyzer, & much more.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 1

Other

IEEE-754 converter

This little tool decodes: (1) single, double and extended precision floating point numbers from their binary representation (both Little and Big-Endian) into their decimal exponential representation; (2) 16-byte GUIDs from their binary representation (both Little and Big-Endian) into their normal textual representation; (3) Delphi TDateTime values in Big-Endian to their human-readable textual representation

  • Quiet
  • Application
  • Delphi
  • SourceForge
  • BSD License

Applications

VPR

VPR is a polygon rasterizer that computes exact coverage values in floating point precision. The rendering quality is on par with other high quality rasterizers, such as AGG, LibArt and FreeType. VPR includes a renderer for the Graphics32 library

  • Quiet
  • Library
  • SourceForge
  • Mozilla Public License 1.0 (MPL)

Graphics

lib.Float16Utils

Main purpose of this library is to provide functions for conversion to and from half precision (16bit) floating point numbers. It also provides functions for basic arithmetic and comparison of half floats.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 3
  • MPL-2.0

Other

lib.Float80Utils

Small library providing routines for conversion to and from double-extended-precision (80bit) floating-point numbers (for environments without access to type extended - e.g. win64 programs that do not utilize x87 FPU).

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 3
  • MPL-2.0

Other

PlanetaryTransit

High-precision planetary transit calculation tool using Swiss Ephemeris.

  • Active
  • Library
  • GitHub
  • ★ 1

Other

AD9850 DDS control panel

Windows, Delphi Software for controlling the Analog Devices DDS Synthesizer AD9850 under Windows 9x/ME/2000/XP via the parallel port. You may use it as a high-precision dc-60 MHz signal source contained on a single chip.

  • Quiet
  • Application
  • Delphi
  • SourceForge
  • GNU General Public License version 2.0 (GPLv2)

System Science

EpikTimer

EpikTimer is a programmer's stopwatch that is capable of measuring very short events with traceably high precision over long periods of time. It's simple to use, consumes virtually no CPU and requires only 25 bytes of ram to implement a timer instance. The component provides a single internal timer... but unlimited numbers can be declared externally and linked to a single EpikTimer component on the form.

  • Library
  • Lazarus

Date and Time

gmp

FPC 2.4.0 includes an initial version of a Free Pascal interface for the GNU Multiple Precision Arithmetic Library in packages/gmp.

  • Library
  • Lazarus

Bindings

MPArith

. Delphi Multi precision integer, rational, real, and complex arithmetic.

  • Library
  • Delphi

Science

SysTools

Lazarus port for TurboPower SysUtils. Bar codes, sorting, money routines, high-precision math, math expression analyzer, astronomical functions etc.

  • Package
  • Lazarus
  • SourceForge
  • MPL 1.1, MPL-1.1

Other In the Online Package Manager

awesome-pascal

A curated list of awesome Delphi/FreePascal/(any)Pascal frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff. Open source and freeware only!

  • Active
  • Other
  • Lazarus and Delphi
  • GitHub
  • ★ 2,096
  • CC0-1.0

Learning and Examples

Alcinoe

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.

  • Active
  • Package
  • Delphi
  • GitHub
  • ★ 1,134
  • Apache-2.0

Other

skia4delphi

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.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 793
  • MIT

Graphics

neural-api

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.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 465
  • LGPL-2.1

Science

xdpw

XD Pascal: A small embeddable self-hosting Pascal compiler for Windows. Supports Go-style methods and interfaces

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 296
  • BSD-2-Clause

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

mb3d

Mandelbulb3D

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 204
  • LGPL-2.1

Graphics

mcx

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

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 197

Science

FastMath

Fast Math Library for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 194

Science

hxd-plugin-framework

Plugin framework for HxD's data inspector

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 187
  • MPL-2.0

Other

Mad-Pascal

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

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 167

Language Tools

imaginglib

Object Pascal image loading, saving and manipulation library.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 153
  • MPL-2.0

Graphics

DelphiConsole

The Console class from C# ported to Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 143
  • MIT

System

kraft

Kraft Physics Engine is an open source Object Pascal physics engine library that can be used in 3D games.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 132

Games and Game Engines

Clipper

Polygon and line clipping and offsetting library (C++, C#, Delphi) by Angus Johnson. Forked from https://sourceforge.net/projects/polyclipping. I prepared a "Release" branch (containing C# source only) for submodule usage.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 114
  • BSL-1.0

Graphics

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

ezdml

Lightweight data modeling and design tool (超轻量级的数据建模表结构设计工具)

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 103
  • LGPL-2.1

Database

DelphiComponents

This repo includes some free Delphi components compatible with various Delphi IDEs

  • Quiet
  • Package
  • Delphi
  • GitHub
  • ★ 96
  • Apache-2.0

Other

clipper

[mirror] An open source freeware polygon clipping library

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 88
  • BSL-1.0

Graphics

SKIAShellExtensions

Shell extensions for animations files (lottie, telegram, webp...) with Preview Panel, Thumbnail Icon, Lottie Editor. Powered by Skia4Delphi

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 87
  • Apache-2.0

Graphics

pacc

PACC (PAscal C Compiler) is an C compiler, which is implemented in Delphi-7-compatible Object Pascal

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 73

Language Tools

VindexLLM

VindexLLM is a pure Delphi, GPU-powered LLM inference engine that uses Vulkan compute shaders to run GGUF models entirely on the GPU. It performs full transformer inference without relying on Python, CUDA, or other external runtimes, requiring only vulkan-1.dll, which is typically included with modern GPU drivers.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 73

Science

newac

New Audio Components (NewAC) are designed to help your Delphi programs perform different sound processing tasks.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 71

Multimedia

SysTools

SysTools is a library of utility routines & classes for Embarcadero Delphi and C++Builder.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 69

System

MinimalistMediaPlayerX

A powerful, feature-rich MPV-based minimal-interface media player for 64-bit Windows. Lots of keyboard-controlled functionality but with minimal screen clutter. Automatically adjusts the window to match the video dimensions, without a window caption/title bar, to give an immersive viewing experience whether in window mode or fullscreen mode.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 57
  • GPL-3.0

Multimedia

IntXLib4Pascal

Arbitrary Big Integer Library for Pascal

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 56
  • MIT

Other

LKSL

LaKraven Studios Standard Library

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 52

Other

xdp

XD Pascal: A small Pascal compiler for MS-DOS

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 52

Language Tools

at2

Adlib Tracker II is, dare we say, the most userfriendly tracker aimed for the OPL3 FM-chip, and is full of advanced features to simplify your task of making the most of your Adlib-tunes.

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 48

Multimedia

SnapTRAINER

A modular Virtual-PLC Trainer

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 41
  • GPL-3.0

System

DeHL

Delphi Helper Library (Defunct)

  • Archived
  • Library
  • Delphi
  • GitHub
  • ★ 38

Other

editenv

Windows console program for interactively editing the value of an environment variable

  • Active
  • Application
  • GitHub
  • ★ 32
  • GPL-3.0

System

delphi-anomalies-detectors

A comprehensive Delphi library for detecting anomalies in business data using statistical and machine learning approaches. Designed for real-world applications including fraud detection, system monitoring, data validation, and quality control.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 31
  • Apache-2.0

Science

SedaiBasic

SedaiBasic Interpreter with VM

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 31
  • GPL-3.0

Language Tools

DelphiARDrone

A Delphi (Object Pascal) component to control the Parrot AR.Drone from Windows, Mac OS X, Android or iOS. Works with Delphi XE6. Should also work with Appmethod, C++Builder and RAD Studio.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 29

System

vsop2013

Astronomy. VSOP2013 planetary positions. PlanetFun App: Solar system model in 3D. LeapFrog Gravity Integration. Stars, Moon and planets. The discovery of Neptune

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 28
  • MIT

Science