Denys Kozak

qr-code-styling. Automaticly generate your styled QR code in your web app.

next-saas-stripe-starter. Open-source SaaS Starter with User Roles & Admin Panel. Built using Next.js 14, Prisma, Neon, Auth.js v5, Resend, React Email, Shadcn/ui, Stripe, Server Actions.

saas-boilerplate. SaaS Boilerplate - Open Source and free SaaS stack that lets you build SaaS products faster in React, Django and AWS. Focus on essential business logic instead of coding repeatable features!

SaaS-Boilerplate. 🚀🎉📚 SaaS Boilerplate built with Next.js + Tailwind CSS + Shadcn UI + TypeScript. ⚡️ Full-stack React application with Auth, Multi-tenancy, Roles & Permissions, i18n, Landing Page, DB, Logging, Testing

monorepo-github-releases. monorepo release flow: lerna + GitHub Release's Automatically generated release notes

awesome-oss-monetization. 🏆 A curated list of monetization approaches for open-source software. Feedback welcome!

anime. JavaScript animation engine

mini-qr. Create & scan cute qr codes easily 👾

StandWithUkraine. #StandWithUkraine banner and related documents

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

the-best-todo-back-end. JavaScript

cypress-realworld-app. A payment application to demonstrate real-world usage of Cypress testing methods, patterns, and workflows.

moose. 🦌 An application to stream, cast and download torrents.

jira_clone. A simplified Jira clone built with React/Babel (Client), and Node/TypeScript (API). Auto formatted with Prettier, tested with Cypress.

gitignore. A collection of useful .gitignore templates

javascript-testing-best-practices. 📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)

react-query-moviedb-demo. Demonstration of react-query library features using free MovieDB API

github-copilot-demo. A nonsensical React application made (almost) entirely by GitHub Copilot

size-limit. Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.

telegram-tt. Telegram Web A, GPL v3

tweb. Telegram Web K, GPL v3

vite. Next generation frontend tooling. It's fast!

awesome-cto. A curated and opinionated list of resources for Chief Technology Officers, with the emphasis on startups

wasm-by-example. Wasm By Example is a website with a set of hands-on introduction examples and tutorials for WebAssembly (Wasm)

qr-code-styling-docs. Vue

You-Dont-Know-JS-Yet-UK. Ukrainian translation of "You Don't Know JS (Yet)" book series by Kyle Simpson

nodebestpractices. ✅ The Node.js best practices list (July 2026)

ui-components. A collection of UI components that are shared across Weaveworks projects

getting-a-gig. Guide for getting a gig as a tech student.

ama. Answering questions I get often

redux-saga. An alternative side effect model for Redux apps

solid. A declarative, efficient, and flexible JavaScript library for building user interfaces.

awesome. 😎 Awesome lists about all kinds of interesting topics

javascript-questions. A long list of (advanced) JavaScript questions, and their explanations :sparkles:

javascript-algorithms. 📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings

clean-code-javascript. Clean Code concepts adapted for JavaScript

every-programmer-should-know. A collection of (mostly) technical things every software developer should know about

udacity-nanodegrees. :mortar_board: List of Udacity Nanodegree programs with links to the free courses in their curricula

the-best-todo-docker. Shell

Front-End-Checklist. 🗂 The essential checklist for modern web development, for humans and AI agents

bracelet. Bracelet Based Access Control System

backend. :octocat: Kottans backend course 🎓

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.

WebFundamentals. Former git repo for WebFundamentals on developers.google.com

standard. 🌟 JavaScript Style Guide, with linter & automatic code fixer

the-best-todo-front-end. http://thebesttodo.tk/

LangSandbox. Project to illustrate how to build a programming language

the-super-tiny-compiler. :snowman: Possibly the smallest compiler ever

learn-regex. Learn regex the easy way

next.js. The React Framework

create-react-app. Set up a modern web app by running one command.

CheatSheetSeries. The OWASP Cheat Sheet Series was created to provide a concise collection of high value information on specific application security topics.

realworld. "The mother of all demo apps" — Exemplary fullstack Medium.com clone powered by React, Angular, Node, Django, and many more