Crow - A Fast and Easy to use microframework for the web.

•    C++

---

Crow is a C++ microframework for running web services. It uses routing similar to Python's Flask which makes it easy to use. It is also extremely fast, beating multiple existing C++ frameworks as well as non C++ frameworks. Available here.

http framework cpp webserver websocket http-server header-only hacktoberfest crow

frugally-deep - Header-only library for using Keras models in C++.

•    C++

---

Would you like to build/train a model using Keras/Python? And would you like run the prediction (forward pass) on your model in C++ without linking your application against TensorFlow? Then frugally-deep is exactly for you. Layer types typically used in image recognition/generation are supported, making many popular model architectures possible (see Performance section).

tensorflow deep-learning keras cpp cpp14 header-only library c-plus-plus c-plus-plus-14 convolutional-neural-networks prediction machine-learning

magic_enum - Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code

•    C++

---

Header-only C++17 library provides static reflection for enums, work with any enum type without any macro or boilerplate code.

cplusplus cplusplus-17 c-plus-plus c-plus-plus-17 cpp cpp17 enum-to-string string-to-enum serialization reflection metaprogramming header-only single-file no-dependencies

nameof - Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum

•    C++

---

Header-only C++17 library provides nameof macros and functions to simply obtain the name of a variable, type, function, macro, and enum. Nameof returns std::string_view. If argument does not have name, returns empty string.

cplusplus cplusplus-17 c-plus-plus c-plus-plus-17 cpp cpp17 nameof nameof-operator enum-to-string serialization reflection metaprogramming header-only single-file no-dependencies

FunctionalPlus - Functional Programming Library for C++. Write concise and readable C++ code.

•    C++

---

helps you write concise and readable C++ code. Great code should mostly be self-documenting, but while using C++ in reality you can find yourself dealing with low-level stuff like iterators or hand-written loops that distract from the actual essence of your code.

range composition stl functional-programming algorithms header-only c-plus-plus c-plus-plus-14 c-plus-plus-17 library cpp cpp14

Catch2 - C++ Automated Test Cases in a Header

•    C++

---

Catch2 stands for C++ Automated Test Cases in a Header and is a multi-paradigm test framework for C++. which also supports Objective-C (and maybe C). It is primarily distributed as a single header file, although certain extensions may require additional headers.

c-plus-plus cpp98 cpp11 testing test-framework tdd bdd header-only single-file no-dependencies framework unit-testing test

nanoflann - nanoflann: a C++11 header-only library for Nearest Neighbor (NN) search with KD-trees

•    C++

---

nanoflann is a C++11 header-only library for building KD-Trees of datasets with different topologies: R2, R3 (point clouds), SO(2) and SO(3) (2D and 3D rotation groups). No support for approximate NN is provided. nanoflann does not require compiling or installing. You just need to #include <nanoflann.hpp> in your code. This library is a fork of the flann library by Marius Muja and David G. Lowe, and born as a child project of MRPT. Following the original license terms, nanoflann is distributed under the BSD license. Please, for bugs use the issues button or fork and open a pull request.

c-plus-plus kd-trees point-clouds cpp nanoflann

Data Crow

•    Java

---

The ultimate cataloguer

nonius - A C++ micro-benchmarking framework

•    C++

---

Nonius is an open-source framework for benchmarking small snippets of C++ code. It is very heavily inspired by Criterion, a similar Haskell-based tool. It runs your code, measures the time it takes to run, and then performs some statistical analysis on those measurements. The library is header-only so you don’t have to build it. It comes as a single header that you can drop somewhere and #include it in your code. Grab that header from the releases page.

benchmarking c-plus-plus

easyloggingpp - Single header C++ logging library

•    C++

---

Single header C++ logging library. It is extremely powerful, extendable, light-weight, fast performing, thread and type safe and consists of many built-in features. It provides ability to write logs in your own customized format. It also provide support for logging your classes, third-party libraries, STL and third-party containers etc.

language stacktrace c-plus-plus cross-platform cpp c-plus-plus-11 logging efficient-logging logging-library performance-analysis thread-safety crash-handler

crow-translate - A simple and lightweight translator that allows you to translate and speak text using Google, Yandex and Bing

•    C++

---

Crow Translate is a simple and lightweight translator written in C++ / Qt that allows you to translate and speak text using Google, Yandex and Bing translate API. You may also be interested in my library QOnlineTranslator used in this project. You can change them in the settings. Some key sequences may not be available due to OS limitations.

google translator ocr yandex bing qt5 dbus-api

doctest - The fastest feature-rich C++11 single-header testing framework for unit tests and TDD

•    C++

---

doctest is a new C++ testing framework but is by far the fastest both in compile times (by orders of magnitude) and runtime compared to other feature-rich alternatives. It brings the ability of compiled languages such as D / Rust / Nim to have tests written directly in the production code by providing a fast, transparent and flexible test runner with a clean interface. The framework is and will stay free but needs your support to sustain its development. There are lots of new features and maintenance to do. If you work for a company using doctest or have the means to do so, please consider financial support. Monthly donations via Patreon and one-offs via PayPal.

c-plus-plus doctest tdd testing unit-testing header-only cplusplus cpp cpp11 cpp14 cpp17 single-file test-framework

RxCpp - Reactive Extensions for C++

•    C++

---

The Reactive Extensions for C++ (RxCpp) is a library of algorithms for values-distributed-in-time. The Range-v3 library does the same for values-distributed-in-space. RxCpp is a header-only C++ library that only depends on the standard library. The CMake build generates documentation and unit tests. The unit tests depend on a git submodule for the Catch library.

reactivex c-plus-plus rxcpp algorithms virtuous-procrastination values-distributed-in-time

hat-trie - C++ implementation of a fast and memory efficient HAT-trie

•    C++

---

Trie implementation based on the "HAT-trie: A Cache-conscious Trie-based Data Structure for Strings." (Askitis Nikolas and Sinha Ranjan, 2007) paper. For now, only the pure HAT-trie has been implemented, the hybrid version may arrive later. Details regarding the HAT-trie data structure can be found here. The library provides an efficient and compact way to store a set or a map of strings by compressing the common prefixes. It also allows to search for keys that match a prefix. Note though that the default parameters of the structure are geared toward optimizing exact searches, if you do a lot of prefix searches you may want to reduce the burst threshold through the burst_threshold method.

cpp trie hat-trie data-structures header-only c-plus-plus

seasocks - Simple, small, C++ embeddable webserver with WebSockets support

•    C++

---

It's not nearly as configurable as Apache, Lighttpd, Nginx, Jetty, etc. It provides only limited support for custom content generation (e.g. Servlets). It has been designed for WebSocket based control. Check out the tutorial on the wiki.

websocket-server c-plus-plus websockets cpp14

Fit - C++ function utility library

•    C++

---

Fit is a header-only C++11/C++14 library that provides utilities for functions and function objects, which can solve many problems with much simpler constructs than whats traditionally been done with metaprogramming. This requires a C++11 compiler. There are no third-party dependencies. This has been tested on clang 3.5-3.8, gcc 4.6-6.2, and Visual Studio 2015. Gcc 5.1 is not supported at all, however, gcc 5.4 is supported.

modern constexpr cplusplus lambda functional c-plus-plus cplusplus-11 cplusplus-14 cpp cpp11 cpp14 functional-programming

hof - Higher-order functions for c++

•    C++

---

HigherOrderFunctions is a header-only C++11/C++14 library that provides utilities for functions and function objects, which can solve many problems with much simpler constructs than whats traditionally been done with metaprogramming. This requires a C++11 compiler. There are no third-party dependencies. This has been tested on clang 3.5-3.8, gcc 4.6-7, and Visual Studio 2015 and 2017.

modern constexpr cplusplus lambda functional c-plus-plus cplusplus-11 cplusplus-14 cpp cpp11 cpp14 functional-programming

glbinding - A C++ binding for the OpenGL API, generated using the gl.xml specification.

•    C++

---

glbinding is a cross-platform C++ binding for the OpenGL API. glbinding leverages modern C++11 features like enum classes, lambdas, and variadic templates, instead of relying on macros; all OpenGL symbols are real functions and variables. It provides type-safe parameters, per feature API header, lazy function resolution, multi-context and multi-thread support, global and local function callbacks, meta information about the generated OpenGL binding and the OpenGL runtime, as well as tools and examples for quick-starting your projects. Based on the OpenGL API specification (gl.xml) glbinding is generated using python scripts and templates that can be easily adapted to fit custom needs.

c-plus-plus c-plus-plus-11 library opengl-bindings opengl-library

beast - HTTP and WebSocket built on Boost.Asio in C++11

•    C++

---

Beast is a C++ header-only library serving as a foundation for writing interoperable networking libraries by providing low-level HTTP/1, WebSocket, and networking protocol vocabulary types and algorithms using the consistent asynchronous model of Boost.Asio. Symmetry: Algorithms are role-agnostic; build clients, servers, or both.

boost c-plus-plus-11 websocket websocket-client websocket-server http http-client http-server asio networking async-programming cplusplus server osx tls ssl websockets boost-libraries

plog - Portable, simple and extensible C++ logging library

•    C++

---

Plog is a C++ logging library that is designed to be as simple, small and flexible as possible. It is created as an alternative to existing large libraries and provides some unique features as CSV log format and automatic 'this' pointer capture. To start using plog you need to make 3 simple steps.

logging header-only cross-platform logger log library c-plus-plus