Didier Plaindoux

pidgin. Pidgin is a common language for describing and validating complex data structures

nel. A very simple implementation of a non-empty list (which does not depend on Base).

zig. Moved to Codeberg

pasteur. Paste-eur as unikernel

polylux. A package for creating slides in Typst

mkernel-empty-project. A very simple skeleton for drafting your first Unikernel using Mkernel (For workshop Materials)

elpi. Embeddable Lambda Prolog Interpreter

lunar. Lunar is a very small (and portable) date management library

ppxlib. Base library and tools for ppx rewriters

touying. Touying is a powerful package for creating presentation slides in Typst.

typst. A markup-based typesetting system that is powerful and easy to learn.

container. A tool for creating and running Linux containers using lightweight virtual machines on a Mac. It is written in Swift, and optimized for Apple silicon.

swipl-devel. SWI-Prolog Main development repository

virtfs. An abstract implementation of file paths

pipelet. Jupyter Notebook

zig-cats. A category theory and functional programing library for Zig language

zig-string. A String Library made for Zig

papers-we-love. Papers from the computer science community to read and discuss.

awesome-zig. A collaborative list of awesome Zig libraries and resources.

blog. https://www.openmymind.net/

mirage. MirageOS is a library operating system that constructs unikernels

ocaml-eglot. An overlay on Eglot for editing OCaml code using LSP

slipshow. An engine for displaying slips, the next-gen version of slides

tutorial-icfp25. https://conf.researchr.org/details/icfp-splash-2025/icfp-splash-2025-tutorials/5/A-guided-tour-through-Oxidized-OCaml

ferriskey. FerrisKey is an open-source IAM solution designed for modern cloud-native environments, high-performance and written in Rust.

svelte. web development for the rest of us

cached. Rust cache structures and easy function memoization

hiveflow. Rust

lean4. Lean 4 programming language and theorem prover

thesis. TeX

datalog. An in-memory datalog implementation for OCaml.

scryer-prolog. A modern Prolog implementation written mostly in Rust.

Design. Design and Analysis of Purely Functional Programs

io-uring. The `io_uring` library for Rust

eio. Effects-based direct-style IO for multicore OCaml

saturn. Lock-free data structures for multicore OCaml

rocq-of-rust. Formal verification tool for Rust: check 100% of execution cases of your programs to make safer applications.

type-systems. Implementations of various type systems in OCaml.

compiling-to-closures. OCaml

nio. Thread-Per-Core async runtime for Rust

ephel. Language mixing functional programming and Ambient Calculus

yokoiboy. Toy GameBoy emulator, in Rust

micrometer. An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

ring. A statically generated webring with YOCaml, because we love small-web

ts2ocaml. Generate OCaml bindings from TypeScript definitions via the TypeScript compiler API

plt. Programming Language Theory λΠ

javalin. A simple and modern Java and Kotlin web framework

Bend. A massively parallel, high-level programming language

yocaml2-empty-template. A dead simple skeleton for bootstrapping a blog using YOCaml 2

type-theory-by-trait. Student work implementing type theory in the rust type system

brave-core. Core engine for the Brave browser for mobile and desktop. For issues https://github.com/brave/brave-browser/issues

tezos-dapps-examples. Examples of dApps using Nightmare and Yourbones

wasm_of_ocaml. OCaml

moonpool. Commodity thread pools and concurrency primitives for OCaml 5

miou. A simple scheduler for OCaml 5

creusot. Creusot helps you prove your Rust code is correct.

js_of_ocaml. Compiler from OCaml to Javascript.

dream. Tidy, feature-complete Web framework

ocaml-flap. A deterministic parser with fused lexing

mini_yocaml. A dead simple implementation of a subset of YOCaml for teaching purpose

pat-lang. The Pat mailbox-typed programming language

gocaml. a moral encoding of the control flow primitives of Go in OCaml using effect handlers

vellvm. The Vellvm (Verified LLVM) coq development.

loko-ml. Lower-Kinded Optics for OCaml

yourbones. A companion library for writing applications on Tezos (in OCaml)

University-Notes. A complete collection of my undergraduate notes

semantic-satiation. Nix

nightmare. A set of components that fit, a priori, relatively well with the web framework (OCaml) Dream to try to build, at best, and quickly, dynamic web applications.

coq-ext-lib. A library of Coq definitions, theorems, and tactics. [maintainers=@gmalecha,@liyishuai]

HVM2. A massively parallel, optimal functional runtime in Rust

martin-lof. papers of Per Martin Löf

scott. Selected Papers of Dana S. Scott

typechecker-evolution. The Evolution of a Typechecker

dromedary. Dromedary is an experimental subset of OCaml, using constraint-based type inference!

breathalyzer. A simple test framework for Ligo Lang

normalization-bench. Benchmarking various normalization algorithms for the lambda calculus

elaboration-zoo. Minimal implementations for dependent type checking and elaboration

ligo-koans. Makefile

ocaml5-parallelism-tutorial. A hands-on tutorial on the new parallelism features in OCaml 5

counterexamples. Counterexamples in Type Systems

muhokama. A simple forum built on top of Dream, Caqti, Omd, Preface, Cmdliner and other useful OCaml libraries

dune-starter-training.

nethra. Minimal core language based on dependent function type, pair type, recursive type, sum type and record type.

unikernels. MirageOS unikernels

tyasta. A journey with F*

category-theory-resources. Resources for learning Category Theory for an enthusiast

alga-paper. A minimalistic, elegant and powerful approach to working with graphs in a functional programming language

Music. Music scores typeset with Lilypond

specification. A statically typed functional programming inspired by Haskell, OCaml and Rust.

Broadhead. Arrow-based parser combinators

EGTBS. being the introduction to co-de-Bruijn metasyntax

git-crypt. Transparent file encryption in git

FStar. A Proof-oriented Programming Language

rational_in_types. Type-level rational puzzles in OCaml

opam. opam is a source-based package manager. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.

lambdapi. Proof assistant based on the λΠ-calculus modulo rewriting

kantan.dot. Scala

awesome-ocaml. A curated collection of awesome OCaml tools, frameworks, libraries and articles.

girards-paradox. A "implementation" of Girard's paradox in OCaml

pilin. A Kotlin multi-platform library providing some functional programming idioms and user defined effects.

preface. Preface is an opinionated library designed to facilitate the handling of recurring functional programming idioms in OCaml.

yocaml. YOCaml is a static site generator, mostly written in OCaml

compiler. Lambe compiler

agda-stdlib. The Agda standard library

agdarsec. Total Parser Combinators in Agda

timescaledb. A time-series database for high-performance real-time analytics packaged as a Postgres extension

strong-krivine. Strongly normalising Krivine machine for λσ⇑-calculus

mcl. a portable and fast pairing-based cryptography library

thermometer-continuations. Examples from our paper "Capturing the Future by Replaying the Past"

cat. C++20 functional library

Effekts. User defined effects for Kotlin multiplatform

lam. :rocket: a lightweight, universal actor-model vm for writing scalable and reliable applications that run natively and on WebAssembly

quiver. A modern commutative diagram editor for the web.

caramel. :candy: a functional language for building type-safe, scalable, and maintainable applications

cargo-expand. Subcommand to show result of macro expansion

galangua. 2D shoot 'em up game, written in Rust

teyjus. An efficient implementation of the higher-order logic programming language Lambda Prolog

plfa.github.io. An introduction to programming language theory in Agda

RML. ML modules and functors as first-class citizens by unifying ML modules and ML records with path dependent types and subtyping.

drom. drom is a wrapper over opam/dune in an attempt to provide a cargo-like user experience. It can be used to create full OCaml projects with sphinx and odoc documentation. It has specific knowledge of Github and will generate files for Github Actions CI and Github pages.

web-ocaml-rust-tuto. List of tutorials/projects experiencing OCaml and Rust mixed code running together in the browser.

ocaml-vdom. Elm architecture and (V)DOM for OCaml

agda. Agda is a dependently typed programming language / interactive theorem prover.

agda-categories. A new Categories library for Agda

cdf-mech-sem. Coq development for the course "Mechanized semantics", Collège de France, 2019-2020

finch. Simple and fast site generator

easy_rust. Rust explained using easy English

kotest. Powerful, elegant and flexible test framework for Kotlin with assertions, property testing and data driven tests.

Publications. Misc. publications, conference slides, etc. For more, go to http://BartoszMilewski.com

shiviz. A tool to visualize distributed system logs

kraft. A Kotlin multiplatform Raft consensus implementation

binaryen.ml. OCaml bindings for Binaryen.

cirrus. Distributed data management from different cloud storage services

Coq-HoTT. A Coq library for Homotopy Type Theory

flexmark-java. CommonMark/Markdown Java parser with source level AST. CommonMark 0.28, emulation of: pegdown, kramdown, markdown.pl, MultiMarkdown. With HTML to MD, MD to PDF, MD to DOCX conversion modules.

miri. An interpreter for Rust's mid-level intermediate representation

KaemikaXM. C#

comby. A code rewrite tool for structural search and replace that supports ~every language.

ocaml-raft. Implementation of Raft consensus algorithm

raft.tla. TLA+ specification for the Raft consensus algorithm

latex-css. LaTeX.css is a CSS library that makes your website look like a LaTeX document

wabt. The WebAssembly Binary Toolkit

Idris2. A purely functional programming language with first class types

mcltl-rs. [beta] An experimental model checker for LTL written in Rust

cassowary-rs. A Rust implementation of the Cassowary constraint solving algorithm

poly_constraints. Hindley-Milner type inference using constraints

grokking_algorithms. Code for the book Grokking Algorithms (https://www.amazon.com/dp/1633438538)

gluon. A static, type inferred and embeddable language written in Rust.

gleam. ⭐️ A friendly language for building type-safe, scalable systems!

irmin. Irmin is a distributed database that follows the same design principles as Git

ocaml-ctypes. Library for binding to C libraries using pure OCaml

next-700-module-systems. PhD research ;; What's the difference between a typeclass/trait and a record/class/struct? Nothing really, or so I argue.

tla-experimentations. TLA+ experimentations

selective-theory-coq. Selective applicative functors laws and theorems

ImperativeToFunctional. An example of using Bow to transform imperative code into functional

firefly. An alternative BEAM implementation, designed for WebAssembly

bow. 🏹 Bow is a cross-platform library for Typed Functional Programming in Swift

flexidisc. Typesafe extensible records (and more) for Idris.

granule. A statically-typed linear functional language with graded modal types for fine-grained program reasoning

pi-forall. A demo implementation of a simple dependently-typed language

pyPMatch. Support for Pattern Matching in Python

hardcaml-zinc. HardCaml implementation of the OCaml ZINC Abstract Machine

luv. Cross-platform asynchronous I/O and system calls

pluto. A web server written in Coq.

io. A library for effects in Coq.

kotlin-examples. Various examples for Kotlin

higher. Higher-kinded programming in OCaml

transept. An OCaml modular and generalised parser combinator library.

ocaml-effects-tutorial. Concurrent Programming with Effect Handlers

ppx_deriving. Type-driven code generation for OCaml

bonsai. A library for building dynamic webapps, using Js_of_ocaml

firecracker. Secure and fast microVMs for serverless computing.

ocaml-ctfp. OCaml version of Category Theory For Programmers

wiwinwlh. What I Wish I Knew When Learning Haskell

UnionType. UnionType in Idris

rocq-of-ocaml. Formal verification for OCaml, with Rocq

functional-effects. The exercises for the Functional Effects workshop

ocaml-lxc. OCaml binding to LXC with idiomatic (and opionated) OCaml API design

awesome-applied-ct. ACT community resources

dune. A composable build system for OCaml.

reasonml-idea-plugin. ReasonML Language Plugin for IDEA

alcotest. A lightweight and colourful test framework

HoTT. Homotopy type theory

olmi. Provide lightweight interface for monads in OCaml

sofp. A free book: "The Science of Functional Programming"

planet. A timetracker and a page generator

programming-talks. Awesome & interesting talks about programming

Idris2-boot. A dependently typed programming language, a successor to Idris

alg. Alg is a program that generates all finite models of a first-order theory. It is optimized for equational theories.

quiche. 🥧 Savoury implementation of the QUIC transport protocol and HTTP/3

celma. Library for generalised parser combinators and a dedicated meta-language in Rust

wasmer. 🚀 Fast, secure, lightweight containers based on WebAssembly

concache. A linked-list based, lock-free concurrent hashmap in Rust.

homotopy-type-theory-course. A course on homotopy theory and type theory, taught jointly with Jaka Smrekar

zio-workshop. Real World Functional Programming with ZIO

Arend. The Arend Proof Assistant

ocamlectron. [WIP] A small framework to build "electron app" using OCaml via Js_of_ocaml

effects-bibliography. A collaborative bibliography of work related to the theory and practice of computational effects

MIRAI. Rust mid-level IR Abstract Interpreter

Refactoring-Kata-Lift-Pass-Pricing. A refactoring kata where you'll practice disentangling business logic from frameworks and SQL