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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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DelphiSerialPort

Blocking serial port unit for Delphi

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

System

lib.FastLocks

Non-blocking synchronization objects based on interlocked functions operating on locking flag(s).

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 7
  • MPL-2.0

System

CerebraChainAI

Creating reasoning chains with AI models not originally designed for it, through advanced asynchronous management in Delphi, using promises for non-blocking execution and transforming synchronous functions into asynchronous processes.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 9
  • MIT

Applications

Advanced-Process-Blocker

A Tool to Block or Terminate Processes by their Name or PID.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 7
  • GPL-3.0

System

app-limiter

Limit Windows programs' internet usage with speed limits, quotas, schedules, and blocking.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 1

Other

delphi-concurrent-pool

A bounded queue, worker and pool for Delphi, with a portable core tested under Free Pascal in CI.

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

Other

SimpleComPort

blocking simple pascal/delphi serial port component/class

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 1
  • GPL-3.0

System

SokolCustomThreadedBase

A high-performance, threaded Delphi component that integrates Neslib.Sokol into VCL applications without blocking the UI thread.

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

Games and Game Engines

SteamServerBlocker

A program for blocking Steam servers (sending data).

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1
  • GPL-3.0

Networking

Y530FunControlService

Service to reduce noise from the cooling system on a Lenovo Legion laptop by controlling сooler speed blocking.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1
  • Apache-2.0

System

Moon Secure Antivirus

Moon Secure Antivirus aims to be the best Free Antivirus for Windows under GPL license. It offers multiple scan engines, Net shield, Firewall, On access, on Exec scanner and rootkits preventions plus features from Commercial Antivirus applications. Also visit TWERT, our sister project, allowing scheduled domain and process blocking with Windows, Linux, OSX installers at https://sourceforge.net/projects/twert/

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

Security

AsyncAwait

Ever need to run heavy operation in background without blocking main thread and get results sync results once done?

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 5

System

ast-mcp

@mwillbanks/ast-mcp is a zero-trust MCP write boundary for coding agents. It combines deterministic file creation, state-machine-enforced edits, dprint formatting, ast-bro code intelligence, agent skills, and blocking hooks for agents.

  • Other
  • Lazarus
  • GitHub

Other

TML Messaging Suite

Establishing asynchronous, multithreaded, bidirectional communication without blocking messages can be time consuming and error prone. Using libTML allows you to implement asynchronous message exchange on top of the IETF standard protocol BEEP (Blocks Extensible Exchange Protocol) without the need to fiddle around with the basics of message processing. All your work can be put into the features of the application instead of taming a TCP/IP socket.

  • Library
  • Lazarus

Networking

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

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

LazWebsockets

Websocket Server and Client Library written in Lazarus

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

Networking

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

loggerpro

An modern and pluggable logging framework for Delphi

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

Other

NetCom7

The fastest communications possible. Delphi rulez.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 218
  • MIT

Networking

SVGShellExtensions

A collection of extensions tools for SVG files, integrated into Microsoft Windows Explorer (for Windows 10 and 11) and a useful SVG Text Editor

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 205
  • Apache-2.0

Graphics

mb3d

Mandelbulb3D

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 204
  • LGPL-2.1

Graphics

RealThinClient-SDK

RealThinClient SDK - Delphi components for building HTTP(S) applications

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 190

Networking

synapse

Synapse TCP/IP library for Delphi and Freepascal

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 157

Networking

Suspending-Techniques

Comparing, discussing, and bypassing various techniques for suspending and freezing processes on Windows.

  • Quiet
  • Other
  • Delphi
  • GitHub
  • ★ 139

System

nx-horizon

NX Horizon - Event Bus for Delphi

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

Other

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

InstantObjects

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

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

Database

MfPack

Delphi translations for Microsoft Media Foundation and related API's

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 102
  • MPL-2.0

Bindings Multimedia

DelphiDeepseek

The Deepseek API wrapper for Delphi leverages Deepseek’s advanced models to deliver powerful capabilities for seamless and dynamic conversational interactions, including a model optimized for reasoning, and now also supports running local models through an LM Studio server.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 100
  • MIT

Networking

DelphiGenAI

The GenAI API wrapper for Delphi seamlessly integrates OpenAI’s latest models (gpt-5 serie), delivering robust support for agent chats/responses, text generation, vision, audio analysis, JSON configuration, web search, and asynchronous operations. Image generation with gpt-image-2. Skills and agents

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 88
  • MIT

Networking

Delphi_OSMMap

Visual control for Delphi and Lazarus to display OSM map

  • Quiet
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 79
  • MPL-2.0

Graphics

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

VSoft.Messaging

Simple internal application messaging for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 64

Other

DelphiAnthropic

The Anthropic API wrapper for Delphi leverages cutting-edge models, including Anthropic's advanced Claude series, to deliver powerful features for chat interactions, vision processing, caching, efficient batch processing, connector MCP, skills and managed agents.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 63
  • MIT

Networking

Delphi_Remote_Desktop

Easy To Use Drag And Drop Desktop Duplication Components (Work In Progress!)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 52
  • MIT

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

nats.delphi

Delphi client for NATS, the cloud native messaging system.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 41
  • MIT

Networking

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

LazTermUtils

Terminal utility classes for FPC and Lazarus on Windows and Unix that provide the functionality of the CRT unit and more

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 39
  • BSD-2-Clause

System

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

delphi-ppl

Extend Delphi Parallel Programming Library to ease async coding

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 37
  • GPL-3.0

System

pascal-process

Pascal library for running processes and redirecting their output.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 35
  • MIT

System

Dialog4D

A Delphi FMX dialog mechanism with async flow, per-form FIFO queueing, custom themes, worker-thread await support, and telemetry.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 32
  • MIT

Dialogs

DX.Logger

Minimalistic cross-platform logging library for Delphi with extensible provider architecture

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 30
  • MIT

Other

taskworker

Task worker thread template

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 5
  • MIT

System

Delphi_Delta_ScreenShot_And_RDP

Fast Delphi screen sharing by sending only the pixels that changed. Great for low-bandwidth or real-time desktop streaming. Included RDP Demo!

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 28
  • MIT

Graphics Networking

Linux4D

Delphi library for system-oriented programming with Linux

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 28
  • Apache-2.0

System