Sign in Join

Live chat for Free Pascal, Lazarus, Delphi and every Pascal programmer.

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.

Random project How the catalog works

ArrayHelper

Useful and handy helper for Array, Vector and Matrix operations, written in Freepascal for Delphi / Freepascal

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 8

Science

DF_DatabaseLibrary

DFDatabaseLibrary is a powerful Delphi library that simplifies database operations using the FireDAC component. It provides a convenient set of functions and procedures to connect to various database systems, create tables, drop tables, perform parameterized queries, and execute update and insert operations.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 2
  • MIT

Database

lazpaint

🎨 Cross-platform image editor with raster and vector layers similar to Paint.Net written in Lazarus (Free Pascal)

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 556
  • GPL-3.0

Graphics

5.0 from 1 member

Calculate

Calculate is small console program for making calculations and displaying the sequence of operations. The program can be used as an educational tool for teaching students how to perform arithmetic operations.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1
  • MIT

Applications

RekenTest

RekenTest is freeware educational software to practice arithmetic skills. It supports basic arithmetic operations like addition and subtraction, the muliplication tables and so on, as well as more advanced arithmetic operations like decimals, money problems, percentages and fractions. The software has lots of options and lets you organize your classroom with tasks and groups.

  • Quiet
  • Application
  • Lazarus
  • SourceForge
  • Mozilla Public License 2.0 (MPL 2.0)

Learning and Examples

basic-math-calculator

👤 ➕ ➖ A project based in a simple application to simulate a modern calculator with 4 modes: Standard, Scientific, Programmer and Date. This project was built using Object Pascal/Pascal for its development. The application allows to the user to swap between this 4 modes of calculator and perform their respectively operations. The application also keeps a history of all the operations performed and their respectively results.

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 1

Applications

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

NDXSQLite

Thread-safe SQLite wrapper for Free Pascal/Lazarus featuring connection pooling, AES-256 encryption (SQLCipher), schema migrations, async operations, and full TDataSet compatibility. Cross-platform: Linux, Windows, macOS.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 28
  • MIT

Database Bindings

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

facilita-fiscal

opensource tool to facilitate brazilian invoice and tax document operations

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 20

Applications

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

0xsp-Mongoose

a unique framework for cybersecurity simulation and red teaming operations, windows auditing for newer vulnerabilities, misconfigurations and privilege escalations attacks, replicate the tactics and techniques of an advanced adversary in a network.

  • Archived
  • Application
  • Lazarus
  • GitHub
  • ★ 532
  • GPL-3.0

Security

FastArrayOps

Ultra Fast Array Operations using AVX/AVX2 code on the arrays to find Min-Max values and Index of them.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 9
  • LGPL-2.1

Science

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

BitColor_Library_Delphi

The library is intended for handling and transform FMX TBitmap objects to simple bit colors images, search color patterns, spectral analyzing and other operations of this kind

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 4
  • MIT

Graphics

DFJSONToDataSetConverter

A simple Delphi utility to convert JSON data to a TDataSet (e.g., TClientDataSet) and perform CRUD operations.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 4
  • MIT

Data controls

Kanban-ToDoList

A personal Delphi project showcasing CRUD operations with a Kanban board feature for managing multiple projects. Offers a dynamic approach to task management.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 4
  • MIT

Applications

altium-mcp-unified

Unified MCP server for Altium Designer with intelligent routing between live API and file-based operations

  • Active
  • Other
  • GitHub
  • ★ 3

Other

cli_math

simple math and logial operations for the command line

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 3
  • Unlicense

Science

delphi_with_mongo

This documentation outlines a Delphi application with CRUD operations using MongoDB, featuring a REST API built with the HORSE framework. It includes setup, usage, and runtime instructions.

  • Quiet
  • Other
  • Delphi
  • GitHub
  • ★ 3

Database

DFNativeWindowsApi

DFNativeWindowsApi is a Delphi library that provides convenient access to various Native Windows API functions for Windows-based applications. These functions cover a range of system-level operations from displaying message boxes to interacting with the underlying system.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 3
  • MIT

System

notepad-py

Notepad Py is a source code editor for the Python language. Its minimalist interface allows you to perform basic text editing operations faster and easier, making it suitable for editing small scripts and/or for users learning the language.

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

Edit and Memos

ECOCMS

A high-performance desktop automation tool built with Delphi FMX to digitize business operations and client management. Features automated PDF contract generation, real-time treatment phase tracking, and secure SQLite-based client repositories.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 2

Applications

log_op

logical operations (or, xor, and) in command line

  • Quiet
  • Other
  • Lazarus
  • GitHub
  • ★ 2
  • Unlicense

Learning and Examples

pobatch

PoBatch is an easy-to-use PO file editor for l10n workflows. It displays source strings and translations in a grid, allowing selection of columns or rows and bulk copy and paste operations. Batch actions across a whole folder - copy source, clear fuzzy, sync with POT, translate - make it easy to keep hundreds of PO files up to date at once.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 2
  • GPL-3.0

Edit and Memos

AstraLogica

AstraLogica: Orbital Command is a tactical retro-tech sci-fi simulation where you act as the Chief Operations Officer (COO) of an isolated space station. Your mission is simple yet brutal: Survive 14 Sol cycles against cosmic anomalies, power blackouts, reactor meltdowns, and mysterious deep space transmissions.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 1
  • MIT

Science

Calculator

A simple calculator built with C++ Builder, supporting basic arithmetic operations.

  • Quiet
  • Application
  • GitHub
  • ★ 1

Applications

LEGACY_SJ_PAT_2019_SPCA_HELP

A repository for the files of my old highschool IT PAT (10th Grade). I was tasked with making an application to assist the SPCA in it's daily operations.

  • Archived
  • Other
  • Delphi
  • GitHub
  • ★ 1
  • MIT

Learning and Examples

rome-tex-tools

Graphical frontend to handle common texture operations for Rome: Total War modding

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 1
  • MIT

Graphics

statman

A simple statistics project doing statistical operations for university course

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1

Science

WCrypt2-Encrypter

These interfaces are used to interact with Cryptographic Service Providers (CSPs), manage certificates, and perform cryptographic operations such as signing, encryption, or hashing.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 1

Cryptography

zada4ki

Program for memorizing the result of arithmetic operations with small numbers

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

Applications

zServer

Source file of zServer that acts as a server when using zlog in multiple operations.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 1
  • 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

AppM Build Automation

AppM Build Automaiton is an open source and automated software application that is used to construct and build projects on different operating systems and using different development environments. General principles of implementation: -Each project must have a Build Project File, containing the necessary information on the construction of the project. For example, a unique name of the project, dependence on other projects and libraries, methods of construction, etc. Thus, the entire repository should be marked by the project description files to provide unambiguous information on the projects and their dependencies. - AppM Build Automaiton must be able to perform different actions (project construction, external applications launch, file copying, etc.) which are needed to build a -product. - All operations with projects should be carried out on the basis of information that build tool derives from the project description files.

  • Quiet
  • Application
  • SourceForge
  • MIT License

Language Tools

Bubbles

Bubbles the simple, easy to use HTTP web server that is browser controlled, and capable of serving static files over the internet, either streamed from disk, or direct from RAM without lag. A GUI administration panel is accessed through your web browser (e.g. "http://localhost:1080/admin/" + default password of "admin"), which controls all her settings and vital functions, all in real time. Apart from serving files, she is capable of tracking site visits (site counters), receiving emails, accepting contact form submissions with support for Spam Guard, and recording site activity as date stamped traffic logs. She also includes a built-in log analyser for making sense of her traffic logs. These and other features make her more than capable of running multiple websites with little to no headache. Her design is light and stable, and an extensive block-based memory management system ensures all her key operations use memory in a sustained and reliable manner.

  • Application
  • SourceForge
  • MIT License

Networking

CalcuFp

New version: CalcuFP program is a calculator software (beta version), has a wide range of mathematical functions, specific functions for different subjects (ex.- IPv4 functions), Apart from being able to have on hand an wide range of functions, allows to use different numbering systems WITHOUT CHANGING MODES. We can sum operations decimal, binary and hexadecimal mixed. Example. - 25 + BIN ('111 ') + HEX (' FF ') -> this is equivalent to adding the integer 25 +7 (binary) +255 (hexadecimal) = 287. Allows use of predefined variables and constants. Creating user functions. It has a programming section through type pascal scripts (still in testing), It has a multimedia viewer to store documentation that we have on hand for our daily tasks. Aside calculators comes with color coded for resistors, inductors and capacitors. Support matrix calculation. Solving systems of n equations. Periodic table of elements. QR code generator Create new User functions with pascal script.

  • Active
  • Application
  • SourceForge
  • Apache License V2.0, Creative Commons Attribution License

Science

DiskTool

DiskTool is a full featured file manager for the linux console or a terminal. It can copy, move, delete, edit, zip, unzip,and mark files for bulk operations. I have also taken a different approach to marking files and what you can do with them. For instance, you can mark a bunch of files in a directory, and then change to another directory and mark a bunch more files. You can keep doing this until you reach the marked files limit of 2000 if you want to. Then you can go to yet another directory and either copy or move ALL of the files you marked in ALL of those directories into one place. Of course DT does standard file functions like copy, move, and delete files or directories, but it also can zip and unzip files, edit files, rename files and directories, manage file permissions and file ownership (chmod and chown), create SymLinks, and even create a new directory

  • Active
  • Application
  • SourceForge
  • Other License

Files and Drives

EXIRION/OS

EXIRION/OS is an operating system for embedded computer systems. These operating systems are designed to be compact, efficient at resource usage, and reliable, forsaking many functions that non-embedded computer operating systems provide, and which may not be used by the specialized applications they run. They are frequently also referred to as real-time operating systems, and the term RTOS is often used as a synonym for embedded operating system. EXIRION/OS project, a Open operating system for computers that can be used in specific operations that require execute a task at a time, EXIRION/OS operating system is a monolithic and mono layered task, which can be used to control complex electronic equipment without the use of instruments PLC, offering a wide range of electronic and industrial applications, EXIRION/OS is also an educational tool, it is an open source operating system to use it as an example of building operating systems in universities and technical colleges.

  • Application
  • SourceForge
  • Other License

System

Graphics32

Graphics32 is a graphics library for Delphi and Lazarus. Optimized for 32-bit pixel formats, it provides fast operations with pixels and graphic primitives. In most cases Graphics32 considerably outperforms the standard TBitmap/TCanvas methods.

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

Graphics

IrfanView

IrfanView is a fast and compact image viewer/converter. It is trying to be simple for beginners and powerful for professionals. It supports file formats and features. Features include: multi-language support, Thumbnail option, Painting, slideshow, toolbar skins, fast directory browsing, batch conversion/editing, multipage editing, file search, change color depth, scanning, cut/crop, IPTC edit, capturing, lossless JPG operations, effects, watermark image option, ICC support, EXE/SCR creating, many hotkeys, command line options and plugins.

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

Graphics

SQLite Micro Manager

SQLite Micro Manager is a lightweight, fast and configurable GUI program mostly designed to access, browse and modify data in SQLite3 databases maintained by other applications, like Web browsers, home accounting software etc. It supports drag-and-drop operations, saving to and retrieving SQL statements from internal library and disk files. runs natively on 64 bit Windows 7/8/10 and Linux Ubuntu derivatives with GTK2+. Can be easily compiled for OSX and Linux GTK3 and QT widget sets with minimal changes. It can run without any installation, although proper installation packages are provided for Windows and Ubuntu-based Linux distributions. The intended audience is people with at least basic knowledge of SQL who need fast and simple tool to deal with SQLite3 databases.

  • Quiet
  • Application
  • SourceForge

Database

XML Tree Editor

XMLTreeEdit displays XML files as tree views and allows basic operations: adding, editting and deleting text nodes and their attributes. The main goal is providing a simple tool to create/edit XML configuration files for users without knowledge of XML. Built in Free Pascal Lazarus, which allows easy compilation for different target platforms. Currently binary executables were produced and tested on Windows (XP, 7) and Ubuntu Linux (GTK2). For developers: there are two units listed separately to support XML configuration files in your application: XMLfile.pas - Lazarus/Free Pascal uXMLConfig.pas - Delphi (2007..XE2)

  • Quiet
  • Application
  • Lazarus and Delphi
  • SourceForge
  • GNU General Public License version 3.0 (GPLv3)

Edit and Memos

DGH-IDE-Notifiers

A RAD Studio IDE plug-in to display notifications of various operations in the IDE as they occur.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 17

Lazarus IDE plugins

stringkit-fp

Comprehensive string toolkit for Free Pascal and Lazarus with 80+ operations for case conversion, validation, fuzzy matching, parsing, encoding, phonetics and text analysis. No third-party dependencies.

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

Other

lib.InterlockedOps

Set of functions providing atomic operations (addition, subtraction, exchange, ...) on variables. Created as a replacement and extension of interlocked functions provided by WinAPI.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 6
  • MPL-2.0

System

lib.BitOps

Provides functions for not-so-common bit operations and more.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 5
  • MPL-2.0

Other

stsad

STSAD is used for checking calculation and design of steel structures composed of spatial members. The core part of the calculation is based on the spatial bar element, and the calculable structures include grid, shell and space truss. This program uses interactive man-machine interface, all operations are completed in the form of interface interaction.

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 4

Science

dynamic-string

A String Object that wants to lower the "Copy-on-Write" events produced by SetLength() Operations as documented at : https://www.freepascal.org/docs-html/rtl/system/setlength.html It is an alternative implementation to the TStringStream Class

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 3

Other

DigitalImageProcessing

Operations applied using digital image processing in Lazarus software - FCT Unesp, Digital Image Processing

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

Graphics

RPNCalc

RPN calculator written in Free Pascal / Lazarus. Supports standard functions, trigonometry with angle modes (deg/rad/gra) and stack operations (Swap, Drop, Dup).

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 2
  • GPL-3.0

Applications

BASICSTRLIB-TP

Bibliothèque de compatibilité pour intégré les fonctions du langage de programmation BASIC dans le langage de programmation Turbo Pascal.

  • Quiet
  • Library
  • GitHub
  • ★ 1
  • MIT

Other

big_values

Delphi module for operations (addition, subtraction, multiplication, exponentiation, +1, -1) with large numbers

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

Science

cdsid-pl-input

Módulo de entrada de problemas de programação linear, com solver lp_solve — Delphi/Object Pascal, CDSID/UFPE.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 1

Other

cdsid-surrogate-simulacao

Simulação de heurísticas com pesos surrogate (ROC/RS/RR) para decisão multicritério — Delphi/Object Pascal, CDSID/UFPE.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 1

Other

CodingAssistant

A text process tool for programmers to deal with frequently made operations on Windows platform.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 1
  • GPL-2.0

Other

customer-registration

Desktop customer registration application built with Lazarus and Object Pascal, featuring CRUD operations, real-time filtering, dataset events, and in-memory data management.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 1

Other

delphi-mongodb-driver

An example project which includes a driver to connect to MongoDB and perform CRUD operations from Pascal.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 1

Database