Mårten Rånge

coreutils. Coreutils for Windows: Installer & Packaging

cobol-v. The GPU shader language you didn't know you needed.

EpsteOut. See which of your LinkedIn connections appear in the Epstein files.

just-the-browser. Remove AI features, telemetry data reporting, sponsored content, product integrations, and other annoyances from web browsers.

so-you-think-you-can-code-2025. 🎄 So You Think You Can Code? 2025! Advent Calendar for geeks: from Shaders & Robotics to Web apps, Rust tricks & Retro code. Submit your best!

alacritty. A cross-platform, OpenGL terminal emulator.

microw8. MicroW8: A WebAssembly based size-coding platform

shader-formatter. Format shader code according to your code style.

shader-advent-2024. Shader Advent Calendar 2024

minfft. A small and fast Discrete Fourier Transform library

cassinis-cosmic-conclusion. Cassini’s Cosmic Conclusion - windows 1k intro

tinyfft. A tiny implementation of in-place FFT. The performance is comparable to FFTW3 for length 2^17 to 2^20.

kissfft. a Fast Fourier Transform (FFT) library that tries to Keep it Simple, Stupid

Devlead.Console. An opinionated .NET source package simplifying bootstrapping console applications with IoC, command-line parsing, logging, and more.

godelian-toolkit. The Gödelian Toolkit: Systematically Testing Simple Languages

Announcement. Announcements on model and API changes, as well as ongoing and recent events imacting our integratons.

moto. Night Ride

SvgToXaml. Smart Tool to view svg-files and convert them to xaml for use in .NET

2kb-tic-tac-toe. World's smallest Tic-Tac-Toe made in .NET 8 Blazor Web App (interactive server), compressed project completely, no unnecessary line spaces. Play, Win/Lose/Draw, Reset. 2 KB.

minesweeper2024. Minesweeper 2024

t4. T4 text templating engine

Humanizer. Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities

Avalonia. Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI

ImHex. 🔍 A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM.

GW-BASIC. The original source code of Microsoft GW-BASIC from 1983

MS-DOS. The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

pyshader_minifier. Shader minifier interface and validation library for Python.

mcwin32. Midnight Commander for Windows

WebDemoExe. javascript demos as small .exe without electron

kkpView-public. Compression ratio analyzer for 64k intros through kkp files (rekkrunchy output)

pakettic. TIC-80 cartridge packer

impulse-samples. Sample code from Impulse

obs-retro-effects. A collection of OBS filters to give your stream that retro feel.

1brc. 1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

LinqGen. Alloc-free and fast replacement for Linq, with code generation

ppmpp. C++ header-only class to draw/read/write 2D graphics using only the standard library.

depends. Tool for generating dependency trees for .NET projects

koka. Koka language compiler and interpreter

ARI. Azure Resource Inventory .NET Tool - Inventories and documents Azure Tenant resources

Bonzomatic. Live shader coding tool and Shader Showdown workhorse

NoodlesPlate. Offline Shader Editor with many cool features

Dotnet.Bacon. A dotnet tool to display tasty bacon

Crinkler. Crinkler is an executable file compressor (or rather, a compressing linker) for compressing small 32-bit Windows demoscene executables. As of 2026, it is the most widely used tool for compressing 1k/4k/8k intros.

aider. aider is AI pair programming in your terminal

4klang. Official 4klang repository

sndh-player. ATARI-ST SNDH Archive music browser/player

GameOfLifeMvvm. Conway's Game of Life with Avalonia UI and the MVVM pattern

windows-terminal-shader-gallery. A gallery of shaders made for Windows Terminal

GLSLShaderShrinker. Cross-platform tool to Reformat/Remove Dead Code/Optimise/Analyse GLSL shader code.

Blossom. 4K Executable Graphics framework

mem-doc. This is a document to help with .NET memory analysis and diagnostics.

BitmapFonts. My collection of bitmap fonts pulled from various demoscene archives over the years

BlazorClippy. Clippy Blazor component

FluentFTP. An FTP and FTPS client for .NET & .NET Standard, optimized for speed. Provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Automatic directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP support, UTF-8 support, Async/await support, Powershell support and more. Written entirely in C#.

veldrid. A low-level, portable graphics library for .NET.

FsNICC. FsNICC

stnicc-beeb. Port of STNICCC-2000 for the BBC Micro.

lygia. LYGIA, it's a granular and multi-language (GLSL, HLSL, Metal, WGSL, WEGL and CUDA) shader library designed for performance and flexibility

vhs. Your CLI home video recorder 📼

Polygon-Triangulization. Convert non-convex polygon into triangles.

rost. Rust programming, in Swedish.

TCB-Star-Wars-Scroller-Reverse-Engineering. Reverse engineering of "Cuddly Demos – The Star-Wars Scroller by The Carebears" on Atari ST

kodelife. kodelife projects

fsharp. The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio

DROMsM. DROMsM is a Windows application written in C# WinForms that exposes several helpful operations that assist you in maintaining your romset collections.

pt_src3. pt_src3

LanceReplay. Lance's MOD Replayer for Atari STe with some fixes by RiFT

Microsoft-3D-Movie-Maker. This is the source code for the original Microsoft 3D Movie Maker released in 1995. This is not supported software.

YaccLexTools. This package includes GPPG and GPLEX tools for compiling YACC and LEX source files in your C# project. Useful if you want to create a compiler, a transpiler or interpret a formal language.

Electron.NET. :electron: Build cross platform desktop apps with ASP.NET Core (Razor Pages, MVC, Blazor).

tiny-sdf. Browser-side SDF font generator

gl-matrix. Javascript Matrix and Vector library for High Performance WebGL apps

Atari_ST_Sources. A large repository of Atari ST (and family) source code

NoDoxx. C#

nuke. 🏗 The AKEless Build System for C#/.NET

apollo-client. The industry-leading GraphQL client for TypeScript, JavaScript, React, Vue, Angular, and more. Apollo Client delivers powerful caching, intuitive APIs, and comprehensive developer tools to accelerate your app development.

ungoogled-chromium. Google Chromium, sans integration with Google

forsen. Instructions for forsen Bajs

chafa. 📺🗿 Terminal graphics for the 21st century.

hiring-without-whiteboards. ⭐️ Companies that don't have a broken hiring process

wasm-tools. CLI and Rust libraries for low-level manipulation of WebAssembly modules

NeuralNetwork-fsharp. F# simple neural network library

Serilog.Sinks.Humio. Serilog sink for Humio

Elmish.WPF. Static WPF views for elmish programs

Silk.NET. The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.

Terminal.Gui.Elmish. An elmish wrapper around Miguel de Icaza's 'Gui.cs' https://github.com/migueldeicaza/gui.cs including a fable like view DSL.

Eto. Cross platform GUI framework for desktop and mobile applications in .NET

Grid.Blazor. Grid component with CRUD for Blazor (client-side and server-side) and ASP.NET Core MVC

cimgui. c-api for imgui (https://github.com/ocornut/imgui) Look at: https://github.com/cimgui for other widgets

ImGui.NET. An ImGui wrapper for .NET.

imgui. Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

synthwave-vscode. Synthwave inspired colour theme for VS Code 🌅🕶

fparsec. A parser combinator library for F#

Terminal.Gui. Cross Platform Terminal UI toolkit for .NET

LSPlayer. Fastest Amiga Module player ever

csly. a C# embeddable lexer and parser generator (.Net core)

honggfuzz. Security oriented software fuzzer. Supports evolutionary, feedback-driven fuzzing based on code coverage (SW and HW based)

scala. Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3

shader-minifier. Minify and obfuscate GLSL or HLSL code

unison. A friendly programming language from the future

webgl-noise. Procedural Noise Shader Routines compatible with WebGL

sc68. Sc68 Atari ST and Amiga music player

jslt. JSON query and transformation language

TryNewDisassembler. C#

z80emu. Building a Z80 emulator in C# as a .NET Standard Class Library. Includes a sample implementation in the form of a ZX Spectrum 48K emulator.

msdfgen. Multi-channel signed distance field generator

simdjson. Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

sharpgl. Use OpenGL in .NET applications. SharpGL wraps all modern OpenGL features and offers a powerful scene graph to aid development.

Fexl. Function EXpression Language (interpreter for functional programs)

AlpineWSL. Alpine Linux based WSL distribution. Supports multi-install. Lightest WSL distribution.

TypeScript.React.Formlets. Formlets in TypeScript/React

audacity. Audio Editor

OpenGL.Net. Modern OpenGL bindings for C#.

synthesizer. On-stream project to build a synthesizer using .NET Core 3, WPF and NAudio

spark. .NET for Apache® Spark™ makes Apache Spark™ easily accessible to .NET developers.

bepuphysics2. Pure C# 3D real time physics simulation library, now with a higher version number.

OpenGL.Core. OpenGL binding for C#

calculator. Windows Calculator: A simple yet powerful calculator that ships with Windows

SimdJsonSharp. C# bindings for lemire/simdjson (and full C# port)

wallhaven-ssaver. OSX screen saver with wallhaven.cc images

fable-formlets. Fable Formlets (Applicative Functor Forms kind of)

milewski-ctfp-pdf. Bartosz Milewski's 'Category Theory for Programmers' unofficial PDF and LaTeX source

json-schema-core. Core support architecture for json-schema-validator and other processors

json-schema-validator. A JSON Schema validation implementation in pure Java, which aims for correctness and performance, in that order

json-schema-validator. A JSON Schema validation implementation in pure Java, which aims for correctness and performance, in that order

4kGL. A minimal starting point for 4k OpenGL demo/game programming.

BANCStar. BANCStar source code

dnSpy. .NET debugger and assembly editor

StreamInfo.

sparser. Sparser: Raw Filtering for Faster Analytics over Raw Data

ray-march. Rendering procedural 3D geometry by raymarching through a distance field

coreclr. CoreCLR is the runtime for .NET Core. It includes the garbage collector, JIT compiler, primitive data types and low-level classes.

blazor. Blazor moved to https://github.com/dotnet/aspnetcore

scalacheck-shapeless. Generation of arbitrary case classes / ADTs instances with scalacheck and shapeless

FsReveal. FsReveal parses markdown and F# script file and generates reveal.js slides.

scalacheck. Property-based testing for Scala

Hopac. http://hopac.github.io/Hopac/Hopac.html

bytecode-viewer. A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)

luigi. Luigi is a Python module that helps you build complex pipelines of batch jobs. It handles dependency resolution, workflow management, visualization etc. It also comes with Hadoop support built in.

YamlDotNet. YamlDotNet is a .NET library for YAML

chiron. JSON for F#

Giraffe. A native functional ASP.NET Core web framework for F# developers.

FolderSize. FolderSize is intended to be a simple application to determine what folders takes up place on your machine and to present it to you graphically.

kotlin. The Kotlin Programming Language.

jitwatch. Log analyser / visualiser for Java HotSpot JIT compiler. Inspect inlining decisions, hot methods, bytecode, and assembly. View results in the JavaFX user interface.

Fable. F# to JavaScript, TypeScript, Python, Rust, Erlang and Dart Compiler

dbf. Java library for fast reading DBF-files.

pebble. Java Template Engine

Legivel. F# Yaml 1.2 parser

vscode-kotlin. Kotlin language support for VS Code

junit-quickcheck. Property-based testing, JUnit-style

shadow. Gradle plugin to create fat/uber JARs, apply file transforms, and relocate packages for applications and libraries. Gradle version of Maven's Shade plugin.

gradle-aws-plugin. Gradle plugin to manage Amazon Web Services

vscode. Visual Studio Code

SIMDArray. SIMD enhanced Array operations

Streams. A lightweight F#/C# library for efficient functional-style pipelines on streams of data.

LinqOptimizer. An automatic query optimizer-compiler for Sequential and Parallel LINQ.

fsharpadvent2016. F# Advent repo for my blog on persistent hash map 2016-12-10

Nu. Repository hosting the open-source Nu Game Engine and related projects.

perfview. PerfView is a CPU and memory performance-analysis tool

fsharp-mentorship. F# Mentorship Program

FStar. A Proof-oriented Programming Language

FsGeneric. Generic F# functions and functional wrappers for .Net

protobuf. Protocol Buffers - Google's data interchange format

Seriously. A golfing language that is probably terrible

Brachylog. A terse declarative logic programming language

gcc. C++

abi-compliance-checker. A tool for checking backward API/ABI compatibility of a C/C++ library

vtable-dumper. A tool to list content of virtual tables in a shared library

abi-dumper. Dump ABI of an ELF object containing DWARF debug info

fsharp. Please file issues or pull requests here: https://github.com/dotnet/fsharp

roslyn. The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

formaggio. An attempt to port Formlets to Scala

pict. Pairwise Independent Combinatorial Tool

system-bus-radio. Transmits AM radio on computers without radio transmitting hardware.

googlemock. Google Mock

rapidcheck. QuickCheck clone for C++ with the goal of being simple to use with as little boilerplate as possible.

0.30000000000000004. Floating Point Math Examples

swift. The Swift Programming Language

Jil. Fast .NET JSON (De)Serializer, Built On Sigil

FsCheck. Random Testing for .NET

tsprintf. tsprintf is a portable type-safe printf library with no runtime cost over printf

CppCoreGuidelines. The C++ Core Guidelines are a set of tried-and-true guidelines, rules, and best practices about coding in C++

MiniJson. Minimal conforming JSON parser for F#

CppParserCombinator. CppParserCombinator

toml. Tom's Obvious, Minimal Language

CppStreams. CppStreams is a data pipeline library for C++

T4Toolbox. C#

hron. hron - human readable object notation

winstrap. The official Bootstrap theme for Microsoft's Modern design language

z3. The Z3 Theorem Prover

Joe. Extremely concise language deriving from J

libgit2sharp. Git + .NET = ❤

FAKE. FAKE - F# Make

cake. :cake: Cake (C# Make) is a cross platform build automation system.

CLAP. CLAP: A Kick-Ass .NET Command-Line Parser

FSharpLangDesign. Gists and docs related to the F# langauge design process, see http://fslang.uservoice.com discussions

parsec. A monadic parser combinator library

Client.Formlet. F#

pfds. F#