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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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stream-adapter

A Pascal stream class that is implemented as an interface, thus offering reference-counting.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 6
  • MIT

Other

RefCountTracer

Utility to help track down memoryleaks caused by Reference Counting

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 29
  • MPL-2.0

System

Cheb's Persistency System

ABANDONED: The version currently in development is NOT compatible with the latest release and CANNOT be used separately from Cheb's Game Engine (not available yet). I am planning to release Chepersy 2 as a separate project someday, but it will not be compatible. I am truly sorry, but there were too many unstable hacks, I failed to reproduce their behavior. The future version will support 64-bit Intel and ARM platforms, will support fpc 3.x and will be based on reference counting (TInterfacedObject) A simple object database system for FreePascal. The persistence component features a powerful version compatibility system. Open architecture: you must manage some aspects by yourself according your needs. NOT compatible with fpc 3.x.

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

Other

persistent-tree

Persistent tree structure written in Pascal that can handle binary data.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 5
  • MIT

Other

DzHTMLText

Delphi and Lazarus HTML Label component

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 229
  • MIT

Labels

4.0 from 1 member

DelphiGrpc

DelphiGrpc is a Delphi implementation of the realtime and streaming gRPC protocol (http://grpc.io).

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 189
  • Apache-2.0

Networking

sempare-delphi-template-engine

Sempare Template (scripting) Engine for Delphi allows for flexible dynamic text generation. It can be used for generating email, html, reports, source code, xml, configuration, etc.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 177
  • Apache-2.0

Language Tools

NtUtilsLibrary

Delphi library for system programming on Windows using Native API

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 146
  • MIT

System

AIO

Coroutine-based multithreading library for Delphi

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

System

InstantObjects

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

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

Database

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

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

BaseNcodingPascal

Library for encoding of binary data into strings using base32, base85, base128 and other algorithms for FPC and Delphi.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 52
  • MIT

Other

NickPascal

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

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 32

Language Tools

CachedTexts

The fastest parsing and generation of text data (Delphi6-XE10)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 31
  • MIT

Language Tools

RxDelphi

Reactive extension for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 30
  • Apache-2.0

Other

jsonDoc

JSON object for Delphi based on IUnknown and Variant

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 29
  • MIT

Language Tools

epiktimer

Handy timer component for use with Free Pascal based projects

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 27

Date and Time

PascalDBPoolConnection

Generic Database Connection Pooling for Delphi/Lazarus/FreePascal

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 27

Database

SmartPointers

This repo includes all different versions of SmartPointer in Delphi to simulate a garbage collector.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 27

System

Delphi-Tasks

Small and simple: Thread Pools with Tasks

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 26
  • Unlicense

System

EZDSL

Easy Data Structures for Delphi

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 25

Other

delphi-ide-remote-mcp

An MCP server that turns a Windows RAD Studio machine into a remote backend for coding agents: safe editing, real MSBuild builds, git, scaffolding, deploy & remote run via PAServer, Android (adb), Linux and Windows desktop control, DelphiLSP navigation, vault. Per-workspace security. Built for our own use, shared under MIT; no commercial plans.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 23
  • MIT

Lazarus IDE plugins

sempare-delphi-streams

Sempare Streams is a Delphi (object-pascal) library providing for stream type operations over various enumerable types similar to Java streams or Linq.

  • Archived
  • Library
  • Delphi
  • GitHub
  • ★ 19
  • GPL-3.0

Other

tokio4delphi

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

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 19

System

threadsafecollections-fp

A thread-safe generic collections library for Free Pascal.

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

Other

DataSetEnumerator

TDataSet helper classes to simplify access to TDataSet fields and make TDataSet work with a for-in-loop.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 15
  • MIT

Database

Express

Fast modern scripting engine for Free Pascal

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 14
  • Apache-2.0

Language Tools

System.ByteStrings

Unofficial ByteStrings Patch To Enable AnsiString Support In Delphi Next Generation

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 13
  • MPL-2.0

Other

mathlib-fp

Scientific, statistical and engineering mathematics for Free Pascal, with no third-party runtime dependencies.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 12
  • MIT

Science

DzHTMLText

Delphi and Lazarus HTML Label component

  • Active
  • Package
  • Lazarus and Delphi
  • Codeberg
  • ★ 1

Labels

Delphi-LitCrypt

Delphi plugin that provides compile-time string encryption

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 11
  • MIT

Cryptography

DelphiLibOpenSSL

Static OpenSSL bindings for Delphi - provides a complete Pascal translation of OpenSSL APIs and pre-compiled object files for Win32/Win64 static linking.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 9
  • Apache-2.0

Bindings

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

tidykit-fp

A comprehensive toolkit for Free Pascal that provides an easy-to-use, unified interface for common operations. Inspired by C++'s Boost.

  • Archived
  • Package
  • Lazarus
  • GitHub
  • ★ 9
  • MIT

Files and Drives

RecordArray

Delphi Typed Pointer made easy

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 8

Other

simplejson-fp

A user-friendly JSON library for Free Pascal with automatic memory management.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 8
  • MIT

Language Tools

velox-ui

VeloxUI — High-velocity, zero-dependency Object Pascal (Delphi VCL & Lazarus/Free Pascal LCL) desktop MVVM & Windows 11 Fluent UI micro-framework: DWM Mica, undocumented uxtheme dark scrollbars, GDI+ vector cards, High-DPI control fixers, flicker-free generic OwnerData virtual grids, and NT Kernel helpers.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 8
  • MIT

GUI containers

DAPUG-2026

Everything AI — DAPUG 2-day workshop on AI-assisted Delphi development and shipping AI features inside Delphi applications.

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 6
  • MIT

Learning and Examples

Formula4D

A typed formula and business-rule engine for Delphi, with validation, traceable execution, and portable JSON rule packages.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 6
  • MIT

Other

DLaya

Fast local AI decisions in Delphi and Free Pascal. A binding for LibLayaX that runs the Laya typed-decision model in-process: no server, no Python. One unit, Laya.pas, with a TLayaAgent class. Windows, Linux and macOS, CPU or GPU, 64-bit. An open-source alternative to Jev

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 5
  • MIT

Bindings

libjxl-delphi

Delphi (Object Pascal) binding for the libjxl JPEG XL C API, with VCL TGraphic integration

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

Bindings

Ossl4Pas

Ossl4Pas is a modern, robust Object Pascal wrapper for the OpenSSL 3.x cryptography library.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 5

Bindings

Rgd.Stringlist

A Delphi Custom Managed Record implementation of TStringlist

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 5
  • MIT

Other

askrcode

Full-stack application framework in Pascal. One binary: HTTP, ORM for Postgres/MySQL/SQLite, migrations, queue, scheduler, auth, and a Svelte 5 component library.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 4
  • MIT

Networking

NativeGrep

Fast parallel file-search library and CLI for Delphi (Win64), built on NativePattern - literal, fuzzy, masked-hex, and regex search with Unicode-aware matching.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 4
  • MIT

Files and Drives

pastree-mcp

An MCP server that gives an AI coding agent (Claude Code, or any MCP client) a semantic index of a Delphi / Object Pascal project group, built by PasTree.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 4
  • MIT

Language Tools

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

AWTrix4D

AWTrix Ulanzi TC001 desktop clock Client for Delphi

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

Networking

Delphi_pimono

A desktop AI coding assistant built with Delphi

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 2

Applications

delphi-fiber-runtime

Portable Pascal service runtime: fixed-rate scheduling, native timers, and measured 1 kHz execution. Fiber runtime under development.

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

System

PasClaude

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

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

Applications