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pocoproject/poco

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The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems.

FreeFree tier
Type
Open Source
Visit Website GitHub (38 stars)

About pocoproject/poco

The POCO C++ Libraries (Portable Components) are a comprehensive collection of open-source, cross-platform C++ class libraries for building network- and internet-based applications. Designed for desktop, server, mobile, IoT, and embedded systems, they are conceptually similar to the Java Class Library or .NET Framework. Written in modern C++ (C++17/20), they focus on internet-age network-centric solutions and complement the C++ Standard Library. Modules cover networking, SSL, cryptography, database access (MySQL, PostgreSQL, ODBC), JSON, XML, HTTP, FTP, and more. Licensed under the Boost Software License and available on many platforms.

Key Features

Cross-platform (Linux, macOS, Windows, embedded systems)
Written in modern C++ (C++17/20)
Networking and HTTP libraries (Net, NetSSL_OpenSSL, NetSSL_Win)
Cryptography and security (Crypto, JWT, SSH)
Database access (Data layer with MySQL, PostgreSQL, ODBC, SQLite)
Data formats (JSON, XML, PDF, Encodings)
Foundation utilities (strings, dates, threads, filesystem)
Internet protocols (HTTP, FTP, SMTP, DNS-SD, Redis, MongoDB, ApacheConnector)
Compression (Zip, SevenZip)
ActiveRecord ORM integration

Pros & Cons

Pros
  • Comprehensive library suite covering many common programming tasks
  • Cross-platform support from embedded to server
  • Modern C++ with C++17/20 features
  • Open source with permissive Boost Software License
  • Well-documented with guided tour and getting started guides
  • Large community (over 9,400 GitHub stars, 2,300 forks)
  • Active development with regular releases
Cons
  • Requires external dependencies for some modules (e.g., OpenSSL, MySQL, PostgreSQL)
  • Large library size may be overkill for simple projects
  • Steep learning curve for developers new to comprehensive C++ class libraries
  • Some features require C++20 and CMake 3.28+
  • No official package manager for all platforms (CMake is recommended)

Best For

Building cross-platform network servers and clientsDeveloping IoT and embedded applicationsCreating desktop applications with network connectivityMobile app backend developmentImplementing RESTful services and APIsSecure communication (SSL/TLS, cryptography)Database-driven applicationsData serialization in JSON, XML, or custom formats