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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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threadsafecollections-fp

A thread-safe generic collections library for Free Pascal.

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

Other

delphi-concurrent-log

A thread-safe logging library for Delphi, with a portable core tested under Free Pascal in CI.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 2
  • MIT

Other

hyper-workers

A lightweight, thread-safe worker management library for Delphi / Pascal that provides concurrent task execution with configurable limits and automatic queue management.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 21

System

pascal-pipes-faa

Cross-platform inter-process communication for Delphi 12+ (Win64) and FPC/Lazarus (Linux x86_64/ARM64): the same API at three scopes — local IPC (Named Pipe/UDS), TCP and TLS with optional mTLS. Synchronous Request-Reply, topic pub/sub with wildcards and retain, AutoReconnect and thread-safe dispatch (pool/serialized/main thread).

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 6
  • MIT

System

DataPort

Thread-safe port for data exchange. Supports network (TCP/UDP/HTTP), serial port, etc.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 58
  • The MIT License (MIT)

Networking In the Online Package Manager

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

NDXSQLite

Thread-safe SQLite wrapper for Free Pascal/Lazarus featuring connection pooling, AES-256 encryption (SQLCipher), schema migrations, async operations, and full TDataSet compatibility. Cross-platform: Linux, Windows, macOS.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 28
  • MIT

Database Bindings

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

simplelog-fp

A simple, lightweight, and easy-to-use logging library for Free Pascal applications.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 14
  • MIT

Other

Virtuoso

Virtuoso is a single-unit, zero-dependency Delphi library that provides unified, thread-safe, generic access to memory-mapped buffers and files.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 8

Other

simple-logger

. FPC Simple, thread-safe logger for FPC/Lazarus. Logs saved to file, support for log archiving and compression.

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 7
  • MIT

Other

ThreadUtils-for-Delphi

Parallel programming utilities and fixes for Delphi. Includes a few thread-safe data types.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 7

System

horse-crud

Middleware de Auto-CRUD de alta performance para o framework Horse. Gere automaticamente rotas CRUD completas (GET, POST, PUT, DELETE) com injeção de persistência genérica de forma thread-safe e multiplataforma (Delphi & Lazarus/FPC).

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 6
  • Apache-2.0

Networking

horse-static

Middleware de serviço de arquivos estáticos de alta performance, thread-safe, com suporte a HTTP 206 (Range) para streaming, controle de cache (ETag/Last-Modified), roteamento SPA Fallback e provedor de armazenamento abstrato para o framework Horse.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 6
  • Apache-2.0

Networking

LBToolkit

A thread-safe, Swiss-army toolkit featuring a reactive logging engine (LBLogger), an embedded HTTP server (LBmicroWebServer), seamless integration with the Python and Node.js ecosystems (LBWebPrism), and a fully customizable virtual keyboard (LBVirtualKeyboard). Distributed as a lightweight shared library (.dll/.so) with a clean, C-style API.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 5
  • MPL-2.0

Other

hermes

Modern Redis client for Delphi — thread-safe, centralized RESP parser, Synapse or Indy transport adapters

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 2
  • BSD-3-Clause

Database

MTLogger

Multi-threaded safe, crossplatform logger for Lazarus/FPC and Delphi.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 1

Other

Skia-RTS-Game

A 2.5D Isometric Real-Time Strategy prototype built entirely with Skia4Delphi. A Command & Conquer style experience, featuring A* pathfinding, isometric rendering, AI skirmish combat, destructible environments, and thread-safe particle physics.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 1
  • MIT

Games and Game Engines Graphics Science

VGStackTrace

A lightweight, thread-safe stack trace tracking library for Delphi

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

Other

HotLog

Logging component for Delphi and Lazarus. Version 3.3 (02-05-2019) Multithreaded, object oriented, buffered safe. The log file will be correctly written to disk, even if your application crashes. The logging/parsing/formating and optionnal visual feedback work don't consume your main thread's time. Logging environment to support debugging. Easy-to-use strings formating capabilities. Update of Olivier Touzot's HotLog component 2004,2005. Many Thanks to Olivier.

  • Quiet
  • Library
  • Lazarus and Delphi
  • SourceForge

Other

TPkgDelegates

Cross-platform thread-safe implementation of Delegates for Delphi 2009 and later

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 8

System

lib.WndAlloc

Replacement of AllocateHWND and DeallocateHWND functions. It is mainly intended for Lazarus since it does not implement these functions at this moment. Note that current implementation is thread safe.

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 5
  • MPL-2.0

System

lib.Messanger

Small library for thread-safe intraprocess communication.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 2
  • MPL-2.0

Other

Delphi-Crash-Reporter

Cross-platform Delphi crash/exception reporter (Linux, macOS, Android, iOS) that emits EurekaLog .el-format reports (open in the EurekaLog Viewer): call stacks, CPU registers, modules, source line numbers. RTL-only core, no FMX dependency, no EurekaLog license required.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 9
  • BSD-2-Clause

System

2.0 from 1 member

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

horse

Fast, opinionated, minimalist web framework for Delphi

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 1,383
  • MIT

Networking

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

skia4delphi

Skia4Delphi is a cross-platform 2D graphics API for Delphi platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 793
  • MIT

Graphics

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

TokenUniverse

An advanced tool for working with access tokens and Windows security policy.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 668
  • MIT

Security

LazWebsockets

Websocket Server and Client Library written in Lazarus

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 123
  • BSD-3-Clause

Networking

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

delphi-event-bus

Delphi Event Bus (for short DEB) is an Event Bus framework for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 496
  • Apache-2.0

Other

loggerpro

An modern and pluggable logging framework for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 400
  • Apache-2.0

Other

DDetours

Delphi Detours Library

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 398
  • MPL-2.0

System

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

dext

Dext - Modern Full Stack Framework for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 330
  • Apache-2.0

Networking

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

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

GpDelphiUnits

A collection of my open sourced Delphi units

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 190
  • BSD-3-Clause

Other

dmustache

A Delphi implementation of the Mustache templating language

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 163

Language Tools

Trysil

A lightweight, attribute-driven ORM for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 160
  • BSD-3-Clause

Database

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

nx-horizon

NX Horizon - Event Bus for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 132
  • MIT

Other

pasmp

PasMP - a parallel-processing/multi-processing library for Object Pascal

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 125

System

AIO

Coroutine-based multithreading library for Delphi

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

System

Delphi-Promises

Delphi implementation of promises for asynchronous programming.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 121
  • MIT

Other

flre

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

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

Language Tools

BrainMM

Extremely fast memory manager for Delphi

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

System