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Catalog

30,060 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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PingOneAuth

Delphi Auth component for the PingOne Platform API

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

Security

HGMPing

Ping ICMP Windows

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

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

TextShaping4Delphi

This contains Delphi headers for FreeType and harfbuzz

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 14

Bindings

polyclipping

Based on http://www.angusj.com/delphi/clipper.php

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 5

Graphics

polyclipping

https://sourceforge.net/projects/polyclipping/

  • Archived
  • Library
  • Delphi
  • GitHub
  • ★ 1
  • BSL-1.0

Graphics

horse

Fast, opinionated, minimalist web framework for Delphi

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 1,383
  • MIT

Networking

LazWebsockets

Websocket Server and Client Library written in Lazarus

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

Networking

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

QuickCore

Delphi Core Framework to fast build desktop/mobile/web apps.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 163
  • Apache-2.0

Networking

synapse

Synapse TCP/IP library for Delphi and Freepascal

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

Networking

Delphi-MCP-Server

Native Delphi Server implementation of the Model Context Protocol (MCP)

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 143
  • MIT

Networking

jhonson

Middleware for parse JSON in HORSE

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 132
  • MIT

Networking

AIO

Coroutine-based multithreading library for Delphi

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

System

DzSocket

Delphi Client/Server components to communicate using TCP Socket Asynchronous easily

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 71
  • MIT

Networking

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

horse-basic-auth

Middleware for Basic Authentication in HORSE

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 59
  • MIT

Security

GHttpsIOCPSvr

Delphi HTTPS server IOCP and Schannel

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

Networking

handle-exception

Middleware for handle exception in HORSE

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 48
  • 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

SendInputHelper

The simplified way to interact with the SendInput-API of windows with Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 40

System

csscontrols

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

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

GUI containers Graphics

OverbyteICS

OverbyteICS. Outdated copy of SVN repository

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 38

Networking

AdvancedHTTPServer

The go-like http/https server for Lazarus + FPC

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 37
  • BSD-3-Clause

Networking

Horse-ETag

MIddleware para Servidor Horse para Controle de Etags

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 37
  • MIT

Networking

Horse-Paginate

Middleware para Paginação de Arquivos JSON no Horse

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 37
  • MIT

Networking

Badger

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 36
  • MIT

Networking

horse-WS

Middleware for WS in HORSE

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 6

Networking

pascal-pipes-faa

Cross-platform inter-process communication for Delphi 12+ (Win64) and FPC/Lazarus (Linux x86_64/ARM64): the same API at three scopes — local IPC (Named Pipe/UDS), TCP and TLS with optional mTLS. Synchronous Request-Reply, topic pub/sub with wildcards and retain, AutoReconnect and thread-safe dispatch (pool/serialized/main thread).

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

System

horse-ratelimit

Basic rate-limiting middleware for Horse. Use to limit repeated requests to public APIs and/or endpoints such as password reset.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 26

Networking

mORMot-MCP-Server

Full MCP 2025-06-18 specification implementation for Delphi with mORMot2

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 22
  • MIT

Networking

delphi-iot

14 IoT and industrial communication libraries for Delphi 12: MQTT, AMQP 1.0, CoAP, Modbus, STOMP, WebSocket, mDNS/DNS-SD, NMEA, InfluxDB, Prometheus, CBOR, MessagePack, JSON, Serial — 694 tests, no external dependencies beyond Indy

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 20

Networking

tina4delphi

Tina4Delphi - A comprehesive set of tools to make REST and application integration better

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

Networking

DTerminal

Command terminal for integrating with the Delphi IDE, compatible with WSL, CMD, and PowerShell.

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

Lazarus IDE plugins

horse-query

Middleware for Horse. Use to send a dataset in json format.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 19

Networking

horse-slowdown

Basic rate-limiting middleware for Horse. Use to limit repeated requests to public APIs and/or endpoints such as password reset.

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 18

Networking

horse-datalogger

Horse-DataLogger: Middleware projetado para registrar todas às requisições e solicitações HTTP para Horse

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 16
  • MIT

Other

SynHTTP

The synapse HTTP(s) Server, compitible wtih Delphi and FPC, Windows, and Linux. Production ready

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 16
  • MIT

Networking

VSoft.Process

A Delphi library for running processes and capturing out, interacting with it.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 16
  • Apache-2.0

System

delphi-mqtt

Modern MQTT client for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 15
  • Apache-2.0

Networking

PowerSQLBuilder

PowerSQLBuilder - Delphi single units with 2 class TPowerSQLBuilder and TSQLQuery.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 12
  • GPL-3.0

Database

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