Mateusz Kelner
Created my first website at 11 years old, hacked a school registry app in middle school and cofounded an edtech startup in high school. TypeScript goes brrr
Companies
Some of my projects turned into companies
Monochrome build
Projects
Side projects and experiments
Make Image Ads
AI-powered ad generator
Active
Generating stunning image ads from brand and product URLs, no additional instructions or templates necessary.
WebStack
Arc like browser
Building
A minimal Arc like macOS web browser built with SwiftUI and WebKit
Make Sora Ads
Prompt builder for Sora
Building
Edit sora prompts like you would edit videos. Built with SolidStart and Railway
MathSciBoard
Collaborative online whiteboard
Collaborative online whiteboard for math and physics. Built with React, Express and MongoDB.
Blog
Notes from building