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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.

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RealThinClient-SDK

RealThinClient SDK - Delphi components for building HTTP(S) applications

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 190

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

DelphiZeroMQ

Delphi implementation of ZeroMQ Majordomo protocol and CZMQ high level binding

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 133

Networking Bindings

GrijjyCloudLogger

GrijjyCloudLogger, remote logging for Windows, iOS, Android, macOS and Linux

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 116

Networking

rnl

RNL - Realtime Network Library - The opensource reliable UDP network library

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 90
  • Zlib

Networking

DataPort

Thread-safe port for data exchange. Supports network (TCP/UDP/HTTP), serial port, etc.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 58
  • The MIT License (MIT)

Networking In the Online Package Manager

Delphi_Remote_Desktop

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

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

Networking

nats.delphi

Delphi client for NATS, the cloud native messaging system.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 41
  • MIT

Networking

Microsoft365-4D

Delphi library for Microsoft 365 integration. OAuth2 with PKCE, Mail, Calendar, Contacts, and SharePoint via Microsoft Graph API. No external dependencies.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 40
  • 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

TLSLib

TlsLib4Pascal is a fully managed, from-scratch TLS 1.2 + TLS 1.3 stack for modern Object Pascal (Delphi and FreePascal), released under the permissive MIT License.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 32
  • MIT License

Cryptography Networking In the Online Package Manager

AsyncIO

Delphi.AsyncIO library

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 31
  • Apache-2.0

Networking

Delphi_Delta_ScreenShot_And_RDP

Fast Delphi screen sharing by sending only the pixels that changed. Great for low-bandwidth or real-time desktop streaming. Included RDP Demo!

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 28
  • MIT

Graphics Networking

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

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

WebSocketUpgrade

easily upgrade any TCP Socket class to a WebSocket implementation including streaming deflate

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 18

Networking

MysticIRC

Mystic BBS 1.11IRC — GPLv3 community fork. RIPscrip v1.54 (42/42 commands, pixel-perfect). BINK, FidoNet AreaFix/FileFix/Tic. ICE colors. Built-in archivers + MP3/MP4 metadata (MARC/MediaTag). DOS i8086 with Watt-32. RIPView + Free Vision TUI. Builds with FPC 2.6.4irc.

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

Networking

DNetLog

TCP/UDP logs for Delphi

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 14

Networking

IsapiScale

make web server Delphi apps scalable

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 10

Networking

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

horse-provider-crosssocket

High-performance, security-hardened CrossSocket provider for the Horse web framework. Replaces the default Indy provider with IOCP/epoll async I/O, an object pool, enforced request limits, and OpenSSL 3.x native TLS.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 9

Networking

pascal-amqp-faa

AMQP 0-9-1 client and broker for Free Pascal/Lazarus and Delphi in a single codebase. The embeddable broker (TAMQPServer) runs inside your application with no RabbitMQ install: exchanges, publisher confirms, mandatory/return, TTL, dead-letter, priorities and optional durability via WAL. MIT.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 9
  • MIT

Networking

horse-static

Middleware de serviço de arquivos estáticos de alta performance, thread-safe, com suporte a HTTP 206 (Range) para streaming, controle de cache (ETag/Last-Modified), roteamento SPA Fallback e provedor de armazenamento abstrato para o framework Horse.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 6
  • Apache-2.0

Networking

mormot2-ai

mORMot2-based AI/LLM extension for Free Pascal and Delphi: MCP server, LLM clients, embeddings, vector stores, RAG

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

Networking

superterm

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

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

Networking

Buzzer

Client-server application for voice communication. Detects servers within a local network, but can also work on a global network if you know the address. Lightweight and simple Pascal abc.net +NAudio

  • Active
  • Application
  • GitHub
  • ★ 4
  • MIT

Networking

DelphiAPIStarterKit

DelphiAPIStarterKit is a clean and reusable starter template for building RESTful APIs and web services with Delphi WebBroker. It provides a structured project foundation, routing, request handling, response helpers, and practical examples to speed up backend development.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 4
  • Apache-2.0

Networking

horse-multipart

Middleware nativo de alto desempenho para parsing e tratamento de requisições multipart/form-data (upload de arquivos e formulários) no framework Horse.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 4
  • Apache-2.0

Networking

ISAPIGate

ISAPI routes HTTPS requests to http-only webserver(s)

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

Networking

xmodem

Implementation of XModem (Send/Receive) and YModem (Send only). Useful to exchange files from modern PC to CP/M computer.

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 4

Networking

DEthereum

Delphi bindings for Ethereum RCP-API

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 3

Networking

netmodem2irc

NetModem/32 revival — virtual COM port FOSSIL Telnet server for classic Windows + DOS i8086 bridge. 34 tests, fpcirc cross-compile.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 3
  • GPL-3.0

Networking

PasSMB

PasSMB is a protocol-native, read-only SMB2/SMB3 client for Delphi/Pascal

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 3
  • BSD-2-Clause

Networking

Apple-LisaFuji

LisaFuji: a FujiNet client for the Apple Lisa Office System (news, Wikipedia, space station map, crew, weather, network clock). Tool 419312.

  • Active
  • Application
  • GitHub
  • ★ 2
  • MIT

Networking

conSock

Lazarus library that implements TCP/IP connections using sockets

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 2
  • GPL-3.0

Networking

LazBle

Cross-platform Bluetooth Low Energy library for Free Pascal and Lazarus.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 2
  • MIT

Networking

LnkISAPI-Filter-Loader

ISAPI Filter Loader (Load DLL ISAPI on fly). Autor: Daniel "sakura" Wischnewski

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 2

Networking

pascal-kafka-faa

Native Apache Kafka client for Delphi and Lazarus/FPC, no librdkafka. Codecs generated from Kafka's message definitions; TLS via SChannel or OpenSSL.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 2
  • MIT

Networking

pascal-mcp-sdk

FreePascal-native MCP (Model Context Protocol) server library — expose tools, resources, and prompts from Pascal programs to AI agents. Zero third-party dependencies, stdio + Streamable HTTP.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 2
  • MIT

Networking

pascal-redis-faa

Cliente Redis (RESP2/RESP3) para Free Pascal/Lazarus e Delphi, numa unica codebase. Pool de conexoes, pipelining, transacoes, scripting, pub/sub, streams e TLS (SChannel no Windows; OpenSSL opt-in). MIT.

  • Active
  • Package
  • Lazarus and Delphi
  • GitHub
  • ★ 2
  • MIT

Networking

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

Port-Scanner

Port Scanner is an application designed to probe a Server or host for open Ports.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 2

Networking