Build from first principles
Understand the mechanism, then make the interface feel obvious. Math engines, language tools, and utilities all start there.
Independent builder · Rajshahi, Bangladesh
Make useful
things.
I’m RK Riad Khan, an open source developer and the creator of the Kirn Programming language. I build tools, languages, and small systems that make hard things feel simpler.
signal / 001online
RK RIAD KHANsoftware · systems · security
everything is open-source in here
everything is open-source in here
01 / Working principles
Curious by
default.
My work lives at the intersection of useful software, clear interfaces, and a healthy suspicion of unnecessary complexity.
Keep the door open
Open source is how I learn in public, share useful work, and leave a project more understandable than I found it.
Respect the person using it
Fast, focused, privacy aware software is a feature. Good tools should help people stay in control.
02 / Selected work
Small tools.
Big intent.
A selection from the open source workshop. Every project starts with a real itch and ends with something you can inspect, run, or extend.
01 / languageC++ · compiler
Kirn
A modern, expressive general purpose programming language designed to keep high level clarity and compiled performance close together.
work in progressOpen source ↗
02 / private aiPython · local first
LocalNeural
A private AI interface for local and cloud models, with streaming, RAG, and multimodal workflows.
self hostedOpen source ↗
03 / calculatorGo · TypeScript
LineSolv
A cross platform natural language calculator for expressions that sound like the way people actually ask them.
desktop appOpen source ↗
04 / identityPython · SQLite
Authority
Authentication infrastructure with API keys, scopes, MFA, audit logging, and pluggable storage for Python apps.
MIT licensedOpen source ↗
05 / audioGo · CLI
neocut
Remove silence from MP3 files automatically, then split and recombine the result from the command line.
terminal toolOpen source ↗
06 / docsTypeScript · LLM
neorwc
An AI powered CLI that reads a codebase and generates structured project documentation.
developer toolOpen source ↗
07 / sharingPython · network
qrtransfer
Share files across a local network by scanning a QR code. Simple handoff, temporary links, no cloud required.
local firstOpen source ↗
08 / mathematicsPython · library
AxiomPy
A first principles math engine bringing linear algebra, graphs, autodiff, and optimization into one API.
on PyPIOpen source ↗
03 / The toolkit
Learn fast.
Ship carefully.
The stack changes with the problem. The habit stays the same: make it work, make it understandable, then make it last.
I work across Python, Go, TypeScript, Rust, C, and C++. Most of my projects are developer tools, desktop applications, CLI utilities, or experiments that turn into something more useful.
Alongside building, I care about security, self hosting, interfaces, and the small details that make software feel calm.
Python
94
TypeScript
88
Go
83
C / C++
76
Rust
68
04 / Two directions
Build close
to the metal.
Two recurring threads in the work: giving people more ownership, and making powerful ideas easier to reach.
Private by design
Local first
LocalNeural explores useful AI interfaces that can run on your own machine, with your own models and your own data.
Creator of Kirn
Kirn
I’m the creator of the Kirn Programming language: a modern, expressive language built to make powerful ideas feel clear and approachable.
05 / Open source worlds
More than
one project.
I help shape a small constellation of public organizations, each with a different job in the ecosystem.
Kirn Lang
The home of the Kirn Programming language, compiler, standard library, and developer tools.
Visit website ↗
KirnOS Kernel
Architecture and core systems work for the KirnOS operating system project.
Visit website ↗
Pats Registry
The package registry and ecosystem for Kirn libraries, tools, and reusable packages.
Visit website ↗
PeekStore
A public hub for discovering and sharing applications, tools, and Kirn ecosystem projects.
Visit website ↗
Kirnly
Desktop and CLI applications built around Kirn, its tools, and its growing developer experience.
Visit website ↗Everything is open source in here.
06 / Say hello
Have a good
problem?
I’m open to open source collaboration, developer tool projects, and thoughtful conversations about building useful software.