1. 

2. The Code Monster Manual Vol. 1

   kevinfocke.com featured

   The Code Monster Manual Vol. 1 — Low-Level Programming Book. What every programmer should know about processors.

   

3. 

4. Vcpkg

   C++ Library Manager for Windows, Linux, and MacOS

   

5. CLI11

   CLI11 is a command line parser for C++11 and beyond that provides a rich feature set with a simple and intuitive interface.

   

6. gflags

   The gflags package contains a C++ library that implements commandline flags processing. It includes built-in support for standard types such as string and the ability to define flags in the source file in which they are used. Online documentation available at:

   

7. args

   A simple header-only C++ argument parser library. Supposed to be flexible and powerful, and attempts to be compatible with the functionality of the Python standard argparse library (though not necessarily the API).

   

8. 

9. InfluxDB

   www.influxdata.com featured

   InfluxDB – Database Purpose-Built for High-Resolution Data. Turn time series data into real-time intelligence. Manage high-volume, high-velocity data without sacrificing performance.

   

10. conan

    Conan - The open-source C and C++ package manager

    

11. 

12. Argh!

    Argh! A minimalist argument handler. (by adishavit)

    

13. clipp

    easy to use, powerful & expressive command line argument parsing for modern C++ / single header / usage & doc generation

    

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better Boost.Program_options alternative or higher similarity.

Boost.Program_options discussion