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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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FluidGuard

Envision a helpful companion that not only observes fluid levels but also takes proactive measures to prevent wastage and shortages with backend safety measures.

  • Quiet
  • Application
  • GitHub
  • ★ 1
  • MIT

Applications

Cancel

Simple continuous measures for assessing spatial neglect

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 5
  • BSD-2-Clause

Science

Ping-Analyze

A ping test measures the response time of a data packet between two devices, and analyzing response times and packet loss provides insight into network performance and potential bottlenecks.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 2

Networking

Digital Reaction Time Ruler

Digital Reaction Time Ruler is a program that replaces the old style Reaction Time Ruler used in Intro to Science 100 college class labs. It measures people's reaction time and outputs it in .csv

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

Science

win-brute-logon

Crack any Microsoft Windows users password without any privilege (Guest account included)

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1,173

Security

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

mcx

Monte Carlo eXtreme (MCX) - Physically accurate and validated GPU ray-tracer

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 197

Science

quantoflx

A desktop customization tool based on Rainmeter

  • Archived
  • Application
  • GitHub
  • ★ 135
  • GPL-3.0

Applications

DelphiCodeCoverage

. Delphi Simple Code Coverage tool for Delphi that creates code coverage reports based on detailed MAP files.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 97
  • MPL-2.0

Language Tools

Gadgets-Additions

Rainmeter skins (System/Web/Markets/BOINC) inspired by the AddGadgets.com (and Orbmu2k) Windows Sidebar Gadgets

  • Active
  • Other
  • GitHub
  • ★ 75

Other

Javascript4D

A native JavaScript (ECMAScript 5.1) parser and interpreter written in Delphi/Object Pascal. Execute JavaScript code directly from your Delphi applications.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 61
  • MIT

Language Tools

Chart4D

Native Delphi charting library for VCL and FMX: clean newspaper-style defaults, PNG export, zero dependencies

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 43
  • MIT

Charts and Graphs

Delphi_SChannelTLS

Helper functions and socket classes to perform TLS communication by means of WinAPI (SChannel)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 39
  • MIT

Networking Security

csscontrols

Implementation of basic css drawing for pascal (fpc, lazarus, delphi)

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 38
  • Apache-2.0

GUI containers Graphics

benchmark

Delphi port of Google Benchmark

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 37
  • Apache-2.0

System

PedPy

Analysis of pedestrian dynamics based on trajectory files.

  • Active
  • Library
  • GitHub
  • ★ 36
  • MIT

Science

SedaiBasic

SedaiBasic Interpreter with VM

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 31
  • GPL-3.0

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

mcp-firebird

A Model Context Protocol server for Firebird 2.5 – 5.0, written in Delphi with the official `fbclient` driver. It lets an AI assistant document schemas, analyze query plans, advise on indexes (which to add and which to drop), audit schema health, and drive goal-based optimization. Read-only by default.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 16

Database

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

AMDPlugin

Rainmeter AMD GPU Plugin

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 15
  • GPL-3.0

System

pas-core-math

Free Pascal based Core Math Implementation

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 15
  • MIT

Science

tpx

TpX: drawing tool for TeX

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 15
  • GPL-2.0

Graphics

MathParser

An expression parser and a virtual machine. A formula is compiled to a flat byte array and evaluated by a linear pass over it, with no allocation on the path of an ordinary formula. On x86-64 an optional accelerator compiles that bytecode to machine code and hands anything it declines back to the interpreter, so an answer is never fast but wrong. Results are cached by shape: once 2 + 3 has been compiled, 5 + 7 reuses the same script and only writes the numbers into a copy. 163 functions to call and 249 names in the table, your own functions and variables bound by address, symbolic differentiation. The Lazarus parser packages require FCL and define NOFORMS and NOGRAPHICS, so they install without LCL. WebAssembly uses a separate console configuration. Two units ask for more at their defaults, Thread through Application.HandleException and BlobManager through TGraphic; drop the defines and add the LCL to the package if you want them.

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

Language Tools In the Online Package Manager

torov

ToroV allows user's applications to run as VMs and to communicate with the host OS by relying on a POSIX hypercall interface.

  • Quiet
  • Application
  • GitHub
  • ★ 12
  • GPL-3.0

System

Delphi-LitCrypt

Delphi plugin that provides compile-time string encryption

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

Cryptography

Golang-REVoid

Go_VM — Delphi Go Source Virtualizer & Obfuscator

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 11

Security

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

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

DragDrop

OLE Drag and Drop for Delphi 7 up to XE7 (32+64 bit)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 7

System

localpal

Run local LLM models in Delphi Object Pascal with llama.cpp.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 7
  • MIT

Applications

DataCube

DataCube, mine your dataset, create a pivot table

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 5
  • MIT

Database

DistanceFields

Rapid thickness estimates for images

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 5
  • BSD-2-Clause

Science

haccdown

Downgrade your TI-84 Plus CE calculator to any OS version you want

  • Active
  • Application
  • GitHub
  • ★ 5

System

tc-jsontab2

WLX for Total Commander to show and edit JSON

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 5
  • GPL-2.0

Edit and Memos

vdb

VDB — İlişkisel Veritabanı Motoru / Relational Database Engine

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 5

Database

watem-sedem

WaTEM/SEDEM

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 5
  • LGPL-3.0

Science

Designer

A visual form designer for .dfm files. Opens a form outside the IDE and loads the installed design-time packages, so every component is a real instance, no placeholders, and the inspector's rows come from the property editors those packages register. The form editor of Vallenta Studio for VS Code

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

Applications

Part

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 4
  • BSD-2-Clause

Applications

NativePattern

Fast pattern search library for Delphi with exact, masked, fuzzy and multi-pattern matching, stream support and AVX2 acceleration.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 3

Other

pptwatch

A time recording tool for presentation practice

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 3
  • MIT

Date and Time

PSY2R

translating PSY to R

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 3

Science

RaspberryPi-BME280-GUI

BME280 GUI – Complete I²C sensor access with GUI, fully self-contained in Free Pascal.

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

System

Secure-Login-System

Implementation of a login form in Object Pascal (Delphi) using the Lazarus framework. The form provides functionality for user registration, login, changing account details and deleting an account. It interfaces with a PostgreSQL database using the ZeosLib component library and performs password hashing using the BCrypt algorithm.

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 3
  • MIT

Security

ShardMM

A scalable memory manager for Delphi on Win64

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

System

TopTools4

Screen design toolbox

  • Quiet
  • Application
  • GitHub
  • ★ 3

Graphics