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Catalog

30,061 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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PureParseFloat

Just Good ParseFloat Algorithm named PureParseFloat

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 19
  • MIT

Other

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

ZXing.Delphi

ZXing Barcode Scanning object Pascal Library for Delphi VCL and Delphi Firemonkey

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 526
  • Apache-2.0

Graphics

delphi-jose-jwt

Delphi implementation of JOSE (JSON Object Signing and Encryption) and JWT (JSON Web Token)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 521
  • MIT

Security Cryptography

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

DelphiOpenAI

OpenAI (and DeepSeek, Azure OpenAI, YandexGPT, Ollama, GigaChat, Qwen) API wrapper for Delphi. Use ChatGPT, DALL-E, Whisper and other products.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 318
  • MIT

Networking

Brook framework

Brook is microframework which helps to develop web Pascal applications.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 278
  • Copyright (c) 2012-2021 Silvio Clecio <silvioprog@gmail.com>

Networking In the Online Package Manager

AIO

Coroutine-based multithreading library for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 121
  • Apache-2.0

System

pixie

A lightweight HTML/CSS rendering engine for Free Pascal (Lazarus) and Delphi (VCL & FMX).

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 25
  • MIT

Graphics

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

mrmath

Delphi matrix library

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 111
  • Apache-2.0

Science

P4D-Data-Sciences

A collection of lightweight Python wrappers based on Python4Delphi simplifying Data Sciences development with Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 110
  • MIT

Bindings Science

BrainMM

Extremely fast memory manager for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 102
  • MIT

System

DelphiComponents

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

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

Other

QuickImageFX

Simplifying image manipulation using GDI, Graphics32, OpenCV or Vampyre Imaging libraries

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 96
  • Apache-2.0

Graphics

libpascurl

libPasCURL is delphi and object pascal wrapper around cURL library. Library for transferring data with URL syntax, supporting HTTP, HTTPS, FTP, FTPS, GOPHER, TFTP, SCP, SFTP, SMB, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP.

  • Archived
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 90
  • GPL-3.0

Bindings Networking

rnl

RNL - Realtime Network Library - The opensource reliable UDP network library

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 90
  • Zlib

Networking

clipper

[mirror] An open source freeware polygon clipping library

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

Graphics

CoreCipher

Standardized cryptography library for Delphi and FPC. Block ciphers, stream ciphers, and hash functions with unified API. Cross-platform, parallel-ready, no dependencies

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 68

Cryptography

TextDiff

Delphi and Lazarus text compare component

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 68

Other

BaseNcodingPascal

Library for encoding of binary data into strings using base32, base85, base128 and other algorithms for FPC and Delphi.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 52
  • MIT

Other

GHttpsIOCPSvr

Delphi HTTPS server IOCP and Schannel

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 48
  • MIT

Networking

TAES

AES encryption and decryption library for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 48

Cryptography

Marvin.IA

Machine Learning in Object Pascal.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 47
  • MIT

Science

mrai

Artificial Intelligence Library

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 39
  • Apache-2.0

Science

OverbyteICS

OverbyteICS. Outdated copy of SVN repository

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 38

Networking

Delphi_Utils_Library

A library with some useful utilities for your Delphi Apps.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 37
  • BSD-3-Clause-Clear

Other

otp

Time-based one-time password for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 33

Security

rpi-hal

Free Pascal / Lazarus Hardware Abstraction Layer for Raspberry Pi Boards

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 32
  • MIT

System

thundax-ai

💡 A series of A.I. Algorithms coded in Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 32

Science

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

command-delphi

Command pattern for Delphi (IComand & TComand)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 29
  • MIT

Other

TWLazUI

"A modern, Tailwind CSS-inspired UI component library for Lazarus and Free Pascal, powered by BGRABitmap." (Pustaka komponen UI modern bergaya Tailwind CSS untuk Lazarus dan Free Pascal, ditenagai oleh BGRABitmap.)

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 29
  • MIT

GUI containers

libpasc-algorithms

libPasC-Algorithms is delphi and object pascal library of common data structures and algorithms. The library is a set of containers adapted for the Pascal language and the template system available on it.

  • Archived
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 27
  • MIT

Other

PKCS7Extractor

PKCS#7 Extractor library for Delphi

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 27
  • LGPL-3.0

Cryptography

KittoX

A Delphi framework for creating data-driven WEB SPA applications with HTMX

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 26
  • Apache-2.0

Networking Database

smPDF

Simple, lightweight PDF writer for Delphi VCL

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 26
  • MIT

Reporting

IAMClient4D

IAMClient4D is a Delphi client library for integrating applications with Keycloak, providing full OAuth2/OpenID Connect support (including PKCE), token and user management, and a lightweight asynchronous task framework (Async.Core) for thread-safe operations across VCL and FMX.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 24
  • Apache-2.0

Security Networking

param-manager

Parameters manager library for Delphi applications

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 24
  • MIT

Other

LazJWT

Lazarus implementation of JWT

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 22
  • MIT

Security

Tiger

Tiger is a Delphi-hosted compiler infrastructure that lets you generate native x86-64 binaries for Windows and Linux — executables, shared libraries, static libraries, and object files — entirely from code. There is no source language to parse. Instead, you construct programs using a fluent Delphi API: define types, declare functions.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 19

Language Tools

sqids-delphi

Delphi port of Sqids. Generate short YouTube-looking IDs from numbers

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 18
  • MIT

Other

PascalString

string port all platforms

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 17

Other

Iterators

Iterator libary for ObjectPascal

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 16
  • BSD-2-Clause

Other

NativeAsm

Native x86-64 code generation, JIT execution, SIMD, disassembly, and runtime instrumentation for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 16
  • MIT

Language Tools

SedaiAudio

Sedai Audio Foundation - Professional audio synthesis library in Free Pascal. 5 Synthesis Engines: Classic/Subtractive, FM (DX7-style), Wavetable, Additive, SID Evo.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 16
  • GPL-3.0

Multimedia

ft

A widget toolkit?

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 12
  • MPL-2.0

GUI containers

unolib

Free Pascal library designed for the Arduino Uno board

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 12
  • MIT

System

Utils

A general utilities library for Delphi projects

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 12
  • MIT

Other

legacy-delphi-modules

Production-grade Delphi modules for managing logical record locks in legacy enterprise software

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 1

Other