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Catalog

30,061 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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Pattern-Lock

Microsoft Windows pattern lock

  • Archived
  • Application
  • Delphi
  • GitHub
  • ★ 4
  • GPL-2.0

Security

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

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

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

pasmp

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

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 125

System

rnl

RNL - Realtime Network Library - The opensource reliable UDP network library

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 90
  • Zlib

Networking

EditInVsCodeDelphiPlugin

Adds a "Open in Visual Studio Code" item in the Delphi Tools menu (great if you have the Copilot extension for Visual Studio Code)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 78
  • MIT

Lazarus IDE plugins

VindexLLM

VindexLLM is a pure Delphi, GPU-powered LLM inference engine that uses Vulkan compute shaders to run GGUF models entirely on the GPU. It performs full transformer inference without relying on Python, CUDA, or other external runtimes, requiring only vulkan-1.dll, which is typically included with modern GPU drivers.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 73

Science

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

MinimalistMediaPlayerX

A powerful, feature-rich MPV-based minimal-interface media player for 64-bit Windows. Lots of keyboard-controlled functionality but with minimal screen clutter. Automatically adjusts the window to match the video dimensions, without a window caption/title bar, to give an immersive viewing experience whether in window mode or fullscreen mode.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 57
  • GPL-3.0

Multimedia

at2

Adlib Tracker II is, dare we say, the most userfriendly tracker aimed for the OPL3 FM-chip, and is full of advanced features to simplify your task of making the most of your Adlib-tunes.

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 48

Multimedia

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

MoonCompiler

Delphi 12-compatible Pascal compiler for Win64 and Linux x86-64. Your Delphi code builds on Linux unchanged — and often runs faster. FPC/Unleashed fork with Unicode RTL and bundled memory manager.

  • Active
  • Application
  • Lazarus and Delphi
  • GitHub
  • ★ 45

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

SnapTRAINER

A modular Virtual-PLC Trainer

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 41
  • GPL-3.0

System

AdvancedHTTPServer

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

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

Networking

Delphi_Utils_Library

A library with some useful utilities for your Delphi Apps.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 37
  • BSD-3-Clause-Clear

Other

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

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

GocciaScript

A sandbox-first JavaScript engine for AI agents: host-set capabilities and limits, deterministic runs, TypeScript annotations, test262 on every pull request.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 20
  • MIT

Language Tools

Delphi-RAG-Lint

Delphi-native, MIT-licensed RAG + linter for Delphi/Pascal source code. Symbol-exact + fuzzy + tree-sitter lint. Pure Delphi at runtime.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 19
  • MIT

Language Tools

tokio4delphi

High-performance async/await library for Delphi, powered by Rust's Tokio runtime.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 19

System

NativeAsm

Native x86-64 code generation, JIT execution, SIMD, disassembly, and runtime instrumentation for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 16
  • MIT

Language Tools

SedaiAudio

Sedai Audio Foundation - Professional audio synthesis library in Free Pascal. 5 Synthesis Engines: Classic/Subtractive, FM (DX7-style), Wavetable, Additive, SID Evo.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 16
  • GPL-3.0

Multimedia

threadsafecollections-fp

A thread-safe generic collections library for Free Pascal.

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

Other

wfc

wave function collapse algorithm

  • Active
  • Application
  • Lazarus and Delphi
  • GitHub
  • ★ 12
  • MIT

Games and Game Engines

Delphi-nghttp2

HTTP/2 and gRPC for Delphi and Free Pascal, built on libnghttp2. Framework-agnostic gRPC layer — protobuf codec, service registry, dispatcher, all four RPC shapes — plus a .proto code generator accepting 99.5% of real googleapis schemas. epoll/IOCP event loops, TLS/mTLS, graceful shutdown.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 9
  • MIT

Networking

glimpse

Total Commander plugin for quick video previews

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 9

Multimedia

Skia4DelphiCanvas

Skia-backed implementation of Vcl.Graphics.TCustomCanvas for Windows/Delphi and FPC on Windows or Linux.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 9
  • MIT

Graphics

Validator4D

Fluent form validation mechanism for Delphi FMX.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 9
  • MIT

Dialogs

lazarus-mcp-assistant

Bring Anthropic's MCP to Lazarus IDE. Let AI assistants natively code, refactor, debug, and design forms in Object Pascal.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 6
  • BSD-3-Clause

Lazarus IDE plugins

superterm

Native GNU/Linux, macOS, and Windows terminal workspace; shared sessions and SSH on POSIX hosts.

  • Active
  • Application
  • GitHub
  • ★ 6
  • GPL-3.0

Networking

AUGMENT-Windows-1252-Editor

This is a replacement for the built-in str-replace-editor, if you are dealing with legacy code that is not UTF-8 and could not be migrated!

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 4

Edit and Memos

Ouress

An Opinionated Underlabouring Research Environment for the Social Sciences

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 4
  • BSD-3-Clause

Science

lwpt

Lightweight Pascal toolkit

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 3
  • MIT

Language Tools

ShardMM

A scalable memory manager for Delphi on Win64

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 3
  • MIT

System

UnleashedPascal-BigInts

Arbitrary-precision integers, decimals and rationals for Unleashed Pascal: signed BigInt, unsigned UBigInt, BigDecimal and BigRational in one dependency-free unit, typically within 1-4x of GMP.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 3
  • MPL-2.0

Science

ActiveAppView

Accessibility tool for active application / explorer quick selection

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 2
  • Apache-2.0

System

bti

MS-DOS text-mode screen capture and presentation suite in Turbo Pascal 7.0 (1996-1997)

  • Active
  • Application
  • GitHub
  • ★ 2
  • MIT

System

castle-doom3

Doom 3 (id Tech 4) levels, materials, md5 models and sounds rendered and played with Castle Game Engine (Object Pascal)

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 2

Games and Game Engines

Delphi-Playground

This project contains set if simple examples on how to improve Delphi code readability, sustainability and portability.

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 2
  • GPL-3.0

Learning and Examples

diary

A little diary app, to help me remember what's happened in my life

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 2
  • MIT

Applications

ERD-Card-Toolkit

A Delphi component library for reading and writing smart cards, contactless tags, magnetic stripes and RFID input on Windows.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 2

System

gsLab

GsLab, a GUI for JugglingLab applet, focused on the generalised siteswap notation.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 2

Applications

hefesto

Simple, efficient background job processing for Delphi — fluent API, retry, observability and pluggable queue brokers

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

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

PasClaude

A terminal coding agent for Windows, written in Free Pascal. No dependencies beyond the FPC RTL.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 2
  • MIT

Applications