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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.

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adjacency-nested-sets-delphi

Delphi implementation of the Celko "nested sets" approach to represent a hierarchy in a relational DB.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 2

Database

dataset-serialize

JSON to DataSet and DataSet to JSON converter for Delphi and Lazarus (FPC)

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 746
  • MIT

Database

dataset-serialize

JSON to DataSet and DataSet to JSON converter for Delphi and Lazarus (FPC)

  • Active
  • Library
  • Lazarus and Delphi
  • Codeberg

Database

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

Notebox Mismanager

A Kylix-based note-accumulating program for Linux/X Windows that uses a grid motif rather than the traditional nested-folder system, and which has moderately advanced searching functions.

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

Applications

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

pasta80

Turbo Pascal 3.0-compatible compiler that generates machine code for classic and modern Z80 machines (currently CP/M, Sinclair ZX Spectrum 48K/128K/Next, and Agon Light/Console8).

  • Active
  • Application
  • GitHub
  • ★ 207

Language Tools

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

GitInfo

Git and SemVer Info from MSBuild, C# and VB

  • Active
  • Library
  • GitHub
  • ★ 654
  • MIT

Language Tools

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

keynote-nf

Tabbed notebook with RichText editor, multi-level notes and strong encryption.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 361
  • MPL-2.0

Edit and Memos

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

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

Delphi-MCP-Server

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

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

Networking

Lape

Scripting engine for Lazarus/Delphi with a Pascal derived syntax.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 143
  • GNU Lesser GPL

Language Tools In the Online Package Manager

GrijjyCloudLogger

GrijjyCloudLogger, remote logging for Windows, iOS, Android, macOS and Linux

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 116

Networking

SwagDoc

Create a public documentation REST API using Swagger 2.0 or Open API 3.2.1 for Delphi.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 108
  • Apache-2.0

Networking

InstantObjects

Pupular OOP-OPF Library for Delphi (from DXE6 to latest version)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 107
  • MPL-2.0

Database

flre

FLRE - Fast Light Regular Expressions - A fast light regular expression library

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 104
  • LGPL-2.1

Language Tools

sing-box-drover

Lightweight GUI launcher and tray controller for sing-box on Windows. Quickly toggle system proxy and TUN mode, switch outbound selectors.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 92

Networking

ezthreads

simple to use threading library

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 86

System

pascual

A self-hosted Pascal compiler

  • Quiet
  • Application
  • GitHub
  • ★ 17
  • Apache-2.0

Language Tools

notetask

A simple application for creating and organizing task lists, offering essential features for efficient task management, similar to Notepad in its simplicity and functionality.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 79
  • GPL-3.0

Applications

JsonToDelphi

generate delphi classes from json (Json To Delphi Class Generator / JSON Data Binding Tool FMX, VCL and uniGUI)

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 76

Language Tools

DynamicDataObjects

This Delphi code library lets you model structured data and serialize to/from : CBOR, JSON, MessagePack msgpack.org[Delphi], ION, UBJSON, BSON, Smile, DataObj, etc.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 71

Other

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

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

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

TestJSON

A simple project to test JSON libraries with Delphi and C++Builder.

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 50
  • MIT

Learning and Examples

delphi-visual-studio-code-debugger

A debugger for delphi in visual studio code, and also a MCP server to give claude/copilot/etc authonomous delphi debugging capabilities

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 48
  • MIT

Language Tools

delphiguard

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

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

Other

crosspascal

CrossPascal aims to be a Delphi 7 compatible cross-platform source-to-source compiler which generates intermediate C code.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 47

Language Tools

StaticCodeAnalyser

Static code analysis for Delphi 12 & 13 and Lazarus / Free Pascal. RAD Studio IDE plugin (32/64-bit) + standalone GUI + CLI, one engine. 201 rules (Pascal AST + DFM/LFM forms): leaks, SQL injection, dead handlers, hardcoded secrets, Unicode & Trojan Source, Win64 pointer bugs. SARIF for CI/CD, SonarQube push.

  • Active
  • Application
  • Lazarus and Delphi
  • GitHub
  • ★ 43

Language Tools

BuilderUI

Forms Builder UI for Windows

  • Active
  • Application
  • Lazarus and Delphi
  • GitHub
  • ★ 40

Applications

cli-fp

A type-safe Free Pascal framework for building powerful CLI applications with rich commands and help systems.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 38
  • MIT

System

csscontrols

Implementation of basic css drawing for pascal (fpc, lazarus, delphi)

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 38
  • Apache-2.0

GUI containers Graphics

Logify

Logify MetaLogger for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 38
  • MIT

System

AdvancedHTTPServer

The go-like http/https server for Lazarus + FPC

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 37
  • BSD-3-Clause

Networking

DustyTP7

Ancient Turbo Pascal source code for programs and units with lots of inline assembly code.

  • Quiet
  • Other
  • GitHub
  • ★ 35
  • MPL-2.0

Learning and Examples

opcb-object-pascal-component-builder

OPCB – Object Pascal Component Builder A library for fluent creation and configuration of components in Delphi and Lazarus. Enables expressive, hierarchical, and reusable runtime UI construction. Developed by Fabiano Arndt. Copyright © 2025 Fabiano Arndt

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 33
  • Apache-2.0

GUI containers

NickPascal

Object Pascal Language Specification — comprehensive, compiler-implementable reference for Delphi Object Pascal

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 32

Language Tools

toml-fp

Simplify parsing and writing TOML config files in Free Pascal

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

Language Tools

DDNRuntime-examples

DDNRuntime(Delphi .NET Framework/.NET Core Runtime) example. DDNRuntime is a library for Delphi to call .net dll. Support the assembly written by c#, vb.net. Support importing .net dll to delphi, can create .net wrapper automatically.

  • Quiet
  • Other
  • Delphi
  • GitHub
  • ★ 28

Learning and Examples

PowerVM

Stealth Type-1 Hypervisor designed specifically to debug processes protected by modern Anti-Cheat systems like Tencent ACE and VMProtect

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 28
  • MIT

System Security

smPDF

Simple, lightweight PDF writer for Delphi VCL

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

Reporting

RetroMul

A cross-platform, extendable, multi-emulator written by Delphi FMX

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 25
  • MIT

Games and Game Engines

DX.TOML

Delphi TOML Library

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 24
  • MIT

Other

EasyConsole

EasyConsole is a library to make it easier for developers to build a simple menu interface for a Delphi console application.

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

Other

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