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Catalog

30,070 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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LazInk

Canvas-drawn HTML and Markdown text controls for Lazarus: labels, memos, list boxes, a rich editor and a help-page viewer. No browser engine, no widgetset-specific code.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 7
  • 0BSD

Edit and Memos

5.0 from 1 member

LazHIDControl

Cross platform keyboard and mouse input control and window automation in Pascal.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 3

System

5.0 from 1 member

InfoBarToast

Lazarus components: TInfoBar, a non-modal MessageDlg on a strip over a form or control, and TToast. Plain LCL.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 1

GUI containers

5.0 from 1 member

DzHTMLText

Delphi and Lazarus HTML Label component

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 229
  • MIT

Labels

4.0 from 1 member

FreeEsVclComponents

Free ErrorSoft Components for Delphi (VCL) & EsVclCore lib

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 190

Other

sharedMemoryClient

Dynamic link library with functions for creation, manipulation, reading, and writing in Shared Memories (Inter-process Communication - IPC). The entire creation process and errors found and resolved are documented.

  • Quiet
  • Library
  • GitHub
  • ★ 3
  • Apache-2.0

System

DEV-UTIL-aufrufst

Pascal unit: stack trace for runtime errors, logging to file (VP 2.x)

  • Quiet
  • Library
  • GitHub
  • ★ 2

System

logutilforpascal

A log unit to handle 8 severity levels of errors

  • Quiet
  • Library
  • GitHub
  • ★ 1

Other

FreeEsVclComponents

Free ErrorSoft Components for Delphi (VCL) & EsVclCore lib

  • Active
  • Library
  • Delphi
  • Codeberg

Other

lib.AuxExceptions

Set of exception classes designed to simplify exception creation in specific situations (eg. index out of bounds, invalid variable value, sytem error, ...).

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 1
  • MPL-2.0

Other

QuickLogger

Powerful and flexible library for logging on files, console, memory, email, rest, eventlog, syslog, slack, telegram, redis, logstash, elasticsearch, influxdb, graylog, Sentry, Twilio, ide debug messages and throw events for Delphi/Firemonkey/freepascal/.NET (Windows/Linux/OSX/IOS/Android).

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 452
  • Apache-2.0

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

MORMot2

Synopse mORMot is an Open Source Client-Server ORM SOA MVC framework for Delphi 6 up to Delphi 10.3 Rio and FPC, targeting Win/Linux for the server, and any platform for clients (including mobile or AJAX).

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 733
  • MPL, GPL or LGPL

Database In the Online Package Manager

QuickLib

Quick development library (AutoMapper, LinQ, IOC Dependency Injection, MemoryCache, Scheduled tasks, Json and Yml Config and Options pattern, Serializers, etc) with crossplatform support for Delphi/Firemonkey (Windows,Linux,OSX/IOS/Android) and freepascal (Windows/Linux).

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 714
  • 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

SVGIconImageList

Four engines to render SVG (Delphi Image32, SVGMagic, Skia4Delphi, Direct2D wrapper) and four components to simplify use of SVG images (resize, fixedcolor, grayscale...) for VCL and FMX platforms.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 399
  • Apache-2.0

Graphics

delphi-neon

JSON Serialization library for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 364
  • MIT

Other

FastMM5

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.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 345

System

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

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

MakerAi

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.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 216
  • MIT

Other

QuickCore

Delphi Core Framework to fast build desktop/mobile/web apps.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 163
  • Apache-2.0

Networking

Delphi-LightSaber

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.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 157

Other

NtUtilsLibrary

Delphi library for system programming on Windows using Native API

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 146
  • MIT

System

Delphi-MCP-Server

Native Delphi Server implementation of the Model Context Protocol (MCP)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 143
  • MIT

Networking

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

TMongoWire

Delphi MongoDB driver

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 105
  • MIT

Database

clipper

[mirror] An open source freeware polygon clipping library

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

Graphics

SkeuoCom

SkeuoSimControls is a custom component library for Lazarus/Free Pascal. Built with BGRABitmap, it provides 20+ realistic, skeuomorphic UI controls (gauges, knobs, oscilloscopes, radar, switches) designed for simulation software, audio interfaces, and industrial dashboards.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 16
  • MIT

Other

McJSON

A Delphi / Lazarus / C++Builder simple and small class for fast JSON parsing.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 72
  • MIT

Other

DzSocket

Delphi Client/Server components to communicate using TCP Socket Asynchronous easily

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 71
  • MIT

Networking

newac

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

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 71

Multimedia

FluentHTML

A library on Pascal, for direct use of HTML tags. Based on HTML5 tags. It can only be used to generate HTML5 Tags, there is no Parse function.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 14

Networking

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

VSoft.Messaging

Simple internal application messaging for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 64

Other

Javascript4D

A native JavaScript (ECMAScript 5.1) parser and interpreter written in Delphi/Object Pascal. Execute JavaScript code directly from your Delphi applications.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 61
  • MIT

Language Tools

pdfium4laz

Object Pascal bindings and visual components for the PDFium library, for Free Pascal and Lazarus. It lets you view, search, extract content from and edit PDF files without any external tools - only the PDFium shared library is required.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 12
  • MIT

Bindings In the Online Package Manager

HxD_DasmDataInspectorPlugin

A generic Disassembly Plugin for Maël Hörz's HxD Freeware Hex Editor and Disk Editor.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 60
  • Apache-2.0

System

OpenAPIClientWizard

OpenAPIClientWizard – the ultimate plugin for RAD Studio that revolutionizes the way Delphi developers implement REST API clients.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 57
  • MIT

Lazarus IDE plugins

IntXLib4Pascal

Arbitrary Big Integer Library for Pascal

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

Other

MultiLog4D

Biblioteca para criação de logs de aplicativos Android

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 55
  • Apache-2.0

Other

CachedBuffers

Extremely fast data streams (Delphi6-XE10)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 54
  • MIT

Other

datavalidator

DataValidator foi projetado para ser uma biblioteca simples de validação de dados.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 52
  • MIT

Other

ipub-refit

Simple way to consume REST services

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 48
  • MIT

Networking

TAES

AES encryption and decryption library for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 48

Cryptography

log4pascal

A simple logging unit for ObjectPascal (Delphi, FreePascal)

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

Other

Tulip_Error_Inline

lightweight Delphi IDE plugin that brings modern, inline error and warning displays directly into the code editor exactly where they happen! at the same line

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 47
  • MIT

Lazarus IDE plugins

horse-logger

Middleware for access logging in HORSE

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 46
  • MIT

Networking

SafeThread4D

Fluent, cooperative, UI-safe background task runner for Delphi FMX, with cancellation, timeout, progress, lifecycle callbacks, and optional mobile UI liveness diagnostics.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 46
  • MIT

System

UninsIS

Windows DLL to facilitate detection and uninstallation of applications installed by Inno Setup 6 and later

  • Active
  • Library
  • GitHub
  • ★ 44
  • LGPL-3.0

System