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30,081 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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protobuf-delphi

Fast and simple implementation of Protocol Buffers for Delphi. Now we support code generation for the classes. Next, we plan to add reflection and records using memory regions.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 57
  • GPL-3.0

Other

IntXLib4Pascal

Arbitrary Big Integer Library for Pascal

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

Other

MarkdownProcessor

A Markdown Processor Library for Delphi, to process and convert markdown files to HTML.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 56
  • Apache-2.0

Other

OboCL

Obo Component Library for Pascal/Lazarus/Delphi

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 56
  • MPL-2.0

Other

trayslate

Trayslate is a tray-based client for translation services. You can enter text directly, translate clipboard content, or translate selected text in any application. You can also replace text in another app with its translation using a hotkey. The app lets you choose and fully configure the translation service you use.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 56
  • GPL-3.0

Other

MultiLog4D

Biblioteca para criação de logs de aplicativos Android

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

Other

QDAC3

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 55

Other

RADWinUI

A WinUI-3 framework for Delphi + IDE Plugin and Tool Palette components.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 55
  • MIT

Other

YS-

  • Active
  • Other
  • Lazarus
  • GitHub
  • ★ 55

Other

CachedBuffers

Extremely fast data streams (Delphi6-XE10)

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

Other

Essentials

Essentials contains 13 native VCL controls for Embarcadero Delphi and C++Builder. The controls include drop-down calendars and calculators, roll-up dialogs, 3-D labels, tiled backgrounds, scrolling messages, menu buttons, and more.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 54

Other

PascalContainer

Generic pascal data structure with B-Tree, B+-Tree, B*-Tree, T-Tree, HashMap, priority queue, red-black-Tree, AVL-tree, Quad-Tree, SkipList, Sortable Single Linklist, Sort Function, LockFreeQueue. contributor: gcarreno at github

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 54
  • BSD

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dduce

DDuce library for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 53
  • Apache-2.0

Other

msgpack-delphi

MessagePack implementation for Pascal / msgpack.org[Pascal]

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 53
  • BSD-2-Clause

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

datavalidator

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

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

Other

jachLogMgr

Open Source logging library for Delphi

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

Other

LKSL

LaKraven Studios Standard Library

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 52

Other

catarinka

A powerful set of multi-purpose libraries for Lua or Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 51

Other

JsonParser

Recursive descent JSON parser for PascalScript

  • Quiet
  • Library
  • GitHub
  • ★ 51

Other

delphiguard

Automatic memory management for Delphi using RAII (Resource Acquisition Is Initialization) pattern

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 48
  • Apache-2.0

Other

FidoLib

A Delphi (10.4.1+) library

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 48

Other

handibot-hardware

Open Source Hardware for the Handibot Smart Tool

  • Quiet
  • Other
  • GitHub
  • ★ 48

Other

log4pascal

A simple logging unit for ObjectPascal (Delphi, FreePascal)

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

Other

mesm6

Implementation of BESM-6 clone in Verilog

  • Active
  • Other
  • GitHub
  • ★ 47
  • MIT

Other

Neslib

Delphi utilities shared with other Neslib repositories

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 47

Other

Silkscreen_Auto_Placer

Automatically place mostly all PCB Silkscreen with this Altium Script.

  • Active
  • Other
  • GitHub
  • ★ 47
  • MIT

Other

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

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

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

LLCL

LLCL - FPC/Lazarus Light LCL

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

Other

MockEverything

Mock Everything - A mock framework for unit test

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

Other

DelphiRTL

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

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 43

Other

stateless

A simple library for creating state machines in DELPHI code

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 43

Other

Delphi

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 42

Other

steampipe-mod-github-sherlock

Interrogate your GitHub resources with the help of the world's greatest detectives: Powerpipe + Steampipe + Sherlock.

  • Active
  • Other
  • GitHub
  • ★ 42
  • Apache-2.0

Other

DelphiEventBus

Implementation of event bus pattern for Delphi XE

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

Other

OpenWire

Visual Programming library for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 41

Other

rcmdline

Advanced command line parser for Pascal

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 41

Other

STAX

Singe Threaded Asynchronous Exexcution (STAX) framework for implementing asynchronous event scheduling similar to javascript or python co-routines

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 41
  • BSD-2-Clause

Other

Delphi-Version-Information

Delphi has several variables, symbols and other means where it stores its own version information. Here is a reference, collected from various sources.

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 40
  • MIT

Other

Delphi-Unicode-Emoji

This unit provides constants for various Unicode emojis in Delphi. Each emoji is represented by a string constant for easy integration into your Delphi projects.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 39

Other

Bind4D

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 38

Other

DeHL

Delphi Helper Library (Defunct)

  • Archived
  • Library
  • Delphi
  • GitHub
  • ★ 38

Other

Longhorn

  • Active
  • Other
  • GitHub
  • ★ 38
  • CC0-1.0

Other

msgpack-delphi

MessagePack serialization for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 38

Other

Aspect4Delphi

Concepts of aspect-oriented programming (AOP) in Delphi.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 37
  • Apache-2.0

Other

CWStudio-Components-Library

Modern Windows 11 / WinUI 3 (Fluent UI v9) styled VCL components for Delphi / RAD Studio.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 37
  • MIT

Other