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Catalog

30,083 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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pascalscada

PascalSCADA for Lazarus

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 47
  • LGPL-2.1

System

PushClient

A cross-platform method of using Firebase Cloud Messaging (FCM) to receive push notifications

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 47
  • Apache-2.0

Networking

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

zExpression

脚本与编译器内部的语法引擎内核，也是一种op内核，zExpression可以轻松实现自己的脚本引擎

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

Language Tools

ADAPT

Advanced Developer Async Programming Toolkit

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

Other

bbutils

A bunch of important low-level functions missing in FreePascal, e.g. string or array manipulation functions.

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

Other

FluidVCL

FluidVCL is a modern, high-performance set of VCL components for Delphi 10.x and above. Built with Windows GDI+, it brings a contemporary, fluid aesthetic to classic desktop applications—featuring anti-aliased rounded corners, smooth state transitions, and deeply customizable layouts.

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

Other

FormatConverter

Pacote de conversão entre formatos (JSON, XML, CSV, etc) para Delphi.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 46
  • MIT

Other

horse-logger

Middleware for access logging in HORSE

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

Networking

MCPConnect

Building MCP servers with Delphi

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

Networking

QDSEquations

Delphi component Equation Editor that allows you to enter and display math formulas

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

Science

ReduxDelphi

ReduxDelphi is a predictable state container for Delphi apps utilizing a unidirectional data flow. Inspired by https://github.com/reactjs/redux .

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 46
  • MIT

Other

REST4Delphi

REST4Delphi is a powerful framework based on DMVCFramework for REST web solution in Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 46
  • Apache-2.0

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

slf4p

A simple logging facade for Object Pascal (Delphi and FPC)

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 46
  • Apache-2.0

Other

TLanguages

Localization tool for VCL and FMX

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 46
  • MIT

Other

zChinese

自然语言项目：大规模词汇数据库 分词器 词性分析 语法依存性分析 关键词分析 简繁转 简港转 拼词转换 拼字转换 姓名识别

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 46
  • Apache-2.0

Other

CodrutsVisualLibrary

A suite of component similar to the Fluent Design System in Microsoft Windows 11. Components & Units are made in Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 45

Other

delphi-argparse

Command line argument parser for Delphi.

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 45
  • MIT

Other

DGoogleAnalytics

Classe criada para facilitar a integração do Delphi com Google Analytics

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 45
  • GPL-3.0

Networking

FastReportExport

⚡ Biblioteca de exportação de relatórios utilizando Fast Report em ambientes multithreading e não GUI(Graphical User Interface).

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 45
  • Apache-2.0

Reporting

LLCL

LLCL - FPC/Lazarus Light LCL

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 45
  • MPL-2.0

Other

Macho-loader

load macho files in memory without touching the Disk

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 45
  • GPL-2.0

System

MockEverything

Mock Everything - A mock framework for unit test

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 45
  • MPL-2.0

Other

MustangpeakEasyListview

TurboPack MustangpeakEasyListview is part of VirtualShellTools for the Listview but can be used for a TListview Replacement that is faster and more customizable.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 45

ListViews and TreeViews

sciter4d

sciter4d (sciter for delphi) : 一个sciter的delphi封装库

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 45
  • GPL-3.0

Bindings

delphi-tdi

Delphi class to create applications that work with tabs similar to what we see in browsers.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 44

Tabbed Components

mxpf

An xEdit scripting library that provides a variety of functions for the generation of patches

  • Quiet
  • Library
  • GitHub
  • ★ 44
  • MIT

Games and Game Engines

ormbr

ORMBr Framework for Delphi (Isaque Pinheiro)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 44
  • LGPL-3.0

Database

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

AsciiImage

AsciiImage for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 43
  • MIT

Graphics

Chart4D

Native Delphi charting library for VCL and FMX: clean newspaper-style defaults, PNG export, zero dependencies

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 43
  • MIT

Charts and Graphs

Delphi-WindowsServiceUtils

Create, delete, stop, start, and change configurations of Windows services.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 43
  • MIT

System

DelphiRTL

Part of the RTL2 project, a Delphi-compatible RTL and non-visual VCL library implementation.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 43

Other

GIFImage

Delphi Firemonkey GIF Image Viewer/Player Component

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 43
  • GPL-3.0

Graphics

SimpleIPC-lib

Simple IPC (interprocess communication) for any program to communicate with another program in any language, with examples in GoLang and Freepascal

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 43
  • MIT

System

stateless

A simple library for creating state machines in DELPHI code

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 43

Other

coinbase-pro

coinbase pro client library (formerly GDAX)

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 8
  • MIT

Networking

Lightweight-Python-Wrappers

Lightweight Wrappers based on Python4Delphi to make it easy to import Python modules into Delphi components.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 42
  • MIT

Bindings

PngComponents

PngComponents for Delphi 2009 and higher

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 42

Graphics

Delphi-IDE-Explorer

A RAD Studio IDE wizard / expert / plugin that allows you to browser the internal fields, methods, properties and events of the IDE.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 41

Lazarus IDE plugins

delphi-libraries

Pure-Delphi audio codec stack — WAV, FLAC, Vorbis, Opus, MP3. No DLLs, no C bindings. CC0 Public Domain.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 41

Multimedia

DelphiEventBus

Implementation of event bus pattern for Delphi XE

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 41
  • MIT

Other

dss_capi

A multi-platform, customized C-API library and alternative implementation of OpenDSS (EPRI Distribution System Simulator) aiming for full COM compatibility. Unofficial/unsupported by EPRI, but extensively tested.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 41
  • BSD-3-Clause

Science