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pocoproject/poco

9,419C++Audience · developerComplexity · 4/5LicenseSetup · moderate

TLDR

POCO is a large collection of C++ libraries that give developers ready-made code for networking, HTTP, JSON, database connections, logging, and configuration, working across Linux, macOS, Windows, and embedded devices.

Mindmap

mindmap
  root((poco))
    What it does
      HTTP client and server
      JSON parsing
      Database connectors
      Logging and config
    Tech Stack
      C++
      CMake build
      OpenSSL optional
    Platforms
      Linux
      macOS
      Windows
      Embedded IoT
    Use Cases
      Networked applications
      Cross-platform apps
      Database services
    Setup
      vcpkg or Conan
      Manual CMake build
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Things people build with this

USE CASE 1

Build an HTTP client or server in C++ without writing low-level network code from scratch.

USE CASE 2

Add JSON parsing and database connectivity to a C++ application using proven, cross-platform libraries.

USE CASE 3

Port a C++ application to Linux, macOS, Windows, or embedded IoT devices using a single codebase.

USE CASE 4

Connect a C++ app to MySQL or PostgreSQL using the optional database connector modules.

Tech stack

C++CMakeOpenSSLMySQLPostgreSQLODBCvcpkgConan

Getting it running

Difficulty · moderate Time to first run · 1h+

Requires CMake and a C++ compiler, optional features like OpenSSL or database connectors must be installed separately.

Use freely in commercial and personal projects with minimal restrictions under the Boost Software License.

In plain English

POCO stands for Portable Components, and this project is a large collection of C++ code libraries that software developers use when building applications that communicate over networks or the internet. Think of it like a toolbox: instead of writing common routines from scratch, a developer pulls in the POCO libraries to handle things like making HTTP requests, running an HTTP server, reading and writing JSON, connecting to databases, logging events, and managing configuration files. The libraries are designed to work on many different kinds of computers and operating systems, from desktop and server machines running Linux, macOS, or Windows, down to small embedded and IoT devices. The code is written in standard C++, which is a programming language known for speed and low resource use, and it builds on top of what C++ already provides rather than replacing it. Setting up POCO involves a build tool called CMake, which reads instructions from the project and compiles the source code into libraries your own programs can link against. The README gives detailed commands for Debian, RedHat, Arch Linux, macOS, and Windows. Optional dependencies like OpenSSL add encrypted network support, and database connectors for MySQL, PostgreSQL, and ODBC are also available but not required. For developers who prefer package managers, POCO is available through vcpkg and Conan. The project is open source under the Boost Software License, which is a permissive license that lets you use the libraries in commercial and personal projects without many restrictions. It has been around long enough to have an active community, dedicated documentation, a blog, and a presence on Stack Overflow for support questions. If you are a non-technical reader trying to understand what this repository is, it is essentially a set of building blocks for C++ programmers who need reliable, well-tested code for networking and internet applications, maintained by a community over many years.

Copy-paste prompts

Prompt 1
Show me how to make an HTTP GET request using the POCO C++ library, including building the request and reading the response body.
Prompt 2
Write a minimal POCO-based HTTP server in C++ that listens on port 8080 and returns a JSON response.
Prompt 3
How do I set up POCO with CMake on Ubuntu and link it to my own C++ project step by step?
Prompt 4
Give me an example of using POCO's JSON parser to read a config file and extract specific values.
Prompt 5
Show me how to connect to a PostgreSQL database from a C++ program using POCO's data library.
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