Top 10 C Functional programming Projects

ring

16 1,232 10.0 C

Simple and flexible programming language for applications development (by ring-lang)
felix

2 793 7.7 C

The Felix Programming Language (by felix-lang)

Project mention: Felix: Statically typed, performant scripting language with native C++ embedding | news.ycombinator.com | 2023-12-28

InfluxDB

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metalang99

42 765 3.7 C

Full-blown preprocessor metaprogramming

Project mention: How to convert an enum to string in C++ | news.ycombinator.com | 2023-09-30

There are also other approaches. Macro variants making use of `__VA_ARGS__` would be probably the best trade-off. If you want a slightly more ergonomic syntax, something like Metalang99 [1] will help (and the author even wrote a post about this exact subject [2]). Codegen is another option which may work better than other options depending on the situation and exact implementation strategy. And there is always the Reflection TS [3], which may or may not be incorporated to C++26...
[1] https://github.com/Hirrolot/metalang99
[2] https://hirrolot.github.io/posts/pretty-printable-enumeratio...
[3] https://en.cppreference.com/w/cpp/experimental/reflect

never

1 401 5.8 C

Never: statically typed, embeddable functional programming language.
crumb

9 389 8.7 C

The Crumb Programming Language

Project mention: Ask HN: Who wants to be hired? (March 2024) | news.ycombinator.com | 2024-03-01

Hi! I'm Liam, a freshman at UBC, aiming to specialize in Computer Science/Physics. Looking for a software related internship in the summer. I've been programming for 7 years, and built dozens of projects, most of them can be found on my Github (https://github.com/liam-ilan).
Over the summer, I built Crumb (https://github.com/liam-ilan/crumb), a programming language from scratch, which was front paged here a couple months ago! I'm also a member of the firmware team at UBC Formula Electric, working on porting firmware for the Front Sensor Module to our next car.
Open to doing just around anything you need me to do. If you have an opening, or any advice, hit me up :D

cognate

5 202 7.2 C

A human readable quasi-concatenative programming language

Project mention: Uiua: A minimal stack-based, array-based language | news.ycombinator.com | 2023-09-27

Reminds me a bit of Cognate(https://github.com/cognate-lang/cognate/blob/master/INTRODUC...)
Think I would like Uiua more if it require a space between terms. It wouldn’t be quite as tacit but it would be easier to read and more flexible — you could multi-symbol operators.

lispBM

3 74 9.6 C

An interpreter for a concurrent lisp-like language with message-passing and pattern-matching implemented in C.

Project mention: Joel Svensson - LispBM (LBM) | /r/haskell | 2023-12-08

Code: https://github.com/svenssonjoel/lispBM

WorkOS

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adorad

5 60 1.8 C

Fast, Expressive, & High-Performance Programming Language for those who dare
Van-lang

1 16 2.2 C

Van programming language. Embeddable and extendable script language in C. Simple and efficient.Inspired by C, Simula and JavaScript
pcomb

1 3 0.0 C

parser combinators in PostScript and C

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).