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Catalog

30,058 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

AL-IV

A programming language AL-IV (ALFOUR) is a high-level imperative object oriented programming language with minimal introduction level, easy porting to any platform claiming a very high level of safety and stability, with a controllable level of code protection, high efficiency of an executable code, full independence from a target platform, minimal enter level.

  • Active
  • Application
  • SourceForge
  • MIT License

Language Tools

CnPack IDE Wizards

CnWizards is CnPack's main products, with the English full name 'CnPack IDE Wizards'. It's a free plug-in tools set used in Delphi 5 6 7 / C++ Builder 5 6 / BDS 2005 2006 2007 2009 2010 to improve our development efficiency.

  • Quiet
  • Library
  • Delphi
  • SourceForge
  • GNU Library or Lesser General Public License version 2.0 (LG

Lazarus IDE plugins

Oz-SGL

Standard Generic Library (SGL) for Pascal using records with heap memory allocator and typed memory regions.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 25
  • Apache-2.0

Other

fueltrack

FuelTrack Station Manager is a Delphi-built fuel management system for stations, tracking fuel usage, sales, and taxes. It features comprehensive reporting on operations and financials, ensuring regulatory compliance and operational efficiency.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1

Applications

CnWizards

. Free Plug-in Tool Set for Delphi/C++ Builder/CodeGear RAD Studio to Improve Development Efficiency.

  • Application
  • Delphi
  • GitHub

Lazarus IDE plugins

Real-include

This is a program (in the form of an interpreted script) that will be written in a pascal derived language known as SCAR. It will serve the same function as another well established program known as SRL, but will focus on efficiency and accuracy.

  • Library
  • SourceForge
  • GNU General Public License version 2.0 (GPLv2)

Games and Game Engines

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

winxcorners

Hot corners for Windows 10 & 11

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 953
  • MIT

System

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

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

OpenDSS

Electrical power system simulation tool primarily for utility power distribution systems

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 155

Science

DelphiZeroMQ

Delphi implementation of ZeroMQ Majordomo protocol and CZMQ high level binding

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 133

Networking Bindings

pasllm

PasLLM - LLM inference engine in Object Pascal (synced from my private work repository)

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 108
  • AGPL-3.0

Science

SIMsalabim

A 1D drift-diffusion simulator for semiconductor devices (LEDs, solar cells, diodes, organics, perovskites)

  • Active
  • Application
  • GitHub
  • ★ 92
  • GPL-3.0

Science

microm8-gui

Cross-platform (Windows / macOS / Linux) GUI for the microM8 Apple II Emulator

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 79

Games and Game Engines

ipub-messaging

Messaging system for communication between classes / layers in delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 63
  • MIT

Other

Delphi_Remote_Desktop

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

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

Networking

GHttpsIOCPSvr

Delphi HTTPS server IOCP and Schannel

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 48
  • MIT

Networking

duckdb-fp

A clean and intuitive wrapper for DuckDB in FreePascal, providing easy database operations and DataFrame-like result handling.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 35
  • MIT

Bindings Database

GS.Core

Common tools for projects

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 33
  • MPL-2.0

Other

mini_projects

Collection of small and easy to understand mini projects that are too big to be a example and to small to be a real project

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 29

Applications

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

MultiCOM

Windows application to monitor up to six serial ports at once

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 24
  • MIT

System

ulid

Universally Unique Lexicographically Sortable Identifier implementation for Delphi (Object Pascal)

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

Other

rknn4Delphi

rknn4Delphi wraps the RKNN C++ API interfaces, enabling Delphi developers to directly utilize the RKNN inference framework within Delphi.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 23
  • MIT

Bindings Science

DelphiGroqCloud

The GroqCloud API wrapper for Delphi provides access to models from Meta, OpenAI, MistralAI and Google on Groq’s LPUs, offering chat, text generation, image analysis, audio transcription, JSON output, tool integration, and content moderation capabilities.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 20
  • MIT

Networking

GrafanaLokiLogger

⚡ GrafanaLokiLogger is a library designed for integration with Grafana Loki, enabling logs to be sent directly to the API in a simple and efficient manner.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 20
  • Apache-2.0

Networking

SynkFlowAI

A proof-of-concept async pipeline framework in Delphi to demonstrate modern AI orchestration with Promises, streaming, and chained execution. Designed by a math researcher to demonstrate that modern, elegant AI architectures can emerge from non-mainstream tools.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 19
  • MIT

Other

DelphiStabilityAI

The Stability API wrapper for Delphi utilizes advanced models developed by Stability.ai to provide capabilities for seamless image, video, and 3D generation, as well as sophisticated editing and upscaling tools, tailored for creative and professional use.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 18
  • MIT

Networking

VSoft.Ulid

Universally Unique Lexicographically Sortable Identifier

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 18
  • Apache-2.0

Other

dnscrypt-gui

DNSCrypt-GUI - GUI for managing the dnscrypt-proxy server

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

Security

Iterators

Iterator libary for ObjectPascal

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 16
  • BSD-2-Clause

Other

DToon

DToon - Delphi Support Lib for Toon (Token-Oriented Object Notation)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 15
  • MIT

Other

FhazEditor

Built natively with Lazarus/FPC — blazingly fast, minimal footprint, 100% bloatware-free.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 15
  • GPL-3.0

Edit and Memos

HorseConnection

HorseConnection is a middleware for the Horse framework that simplifies database connection management in Delphi applications. By providing specific connections for each database type, it eliminates repetitive manual configurations, allowing each Horse endpoint to connect automatically and efficiently to the database.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 15
  • MIT

Database

Admiral

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 14
  • MIT

Database

wfc

wave function collapse algorithm

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

Games and Game Engines

tries

Trie base class and derived classes (TStringHashTrie, TIntegerHashTrie). A high performance and low memory footprint Dictionary set of classes

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 11
  • MIT

Other

deltics.smoketest

Smoketest re-imagined. A lightweight, dependency-free unit testing framework for Delphi, with pluggable result formatting (xUnit 2 OOB)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 10
  • MIT

Language Tools

tiny-prolog2

A simple Prolog II interpreter written in Pascal

  • Active
  • Application
  • GitHub
  • ★ 10
  • MIT

Language Tools

fpc-tply

TPLY (Turbo Pascal Lex and Yacc), extracted from the Free Pascal source tree at freepascal/utils/tply/

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 9
  • GPL-2.0

Language Tools

LazarusVision

TUI Framework for Free Pascal using Lazarus LCL pattern for creating Forms/Buttons/Controls

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

GUI containers

UnitConv

Converts units of measurement data

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 9
  • MIT

Science

DRIVAIR_EDA

EDA source of Drivair, a motor controller with FOC + ADRC control, 15kW, Encoders, Bluetooth 4.0, CAN, LED drivers.

  • Quiet
  • Other
  • GitHub
  • ★ 7

Other

pibackup

Portable live backup tool for Raspberry Pi with GUI, Zstandard compression, auto-shrinking (resize2fs) and flexible restore.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 7
  • MIT

Files and Drives

CXComponents

A collection of custom UI components for Lazarus.

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

GUI containers

superterm

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

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

Networking

Callisto

Lua scripting for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 5
  • BSD-3-Clause

Language Tools

prism

GPT Transformer developed in Delphi 13

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 5

Science