Lukas Heddendorp

prisma-next. TypeScript

t3code. TypeScript

ng-forge. Type-safe dynamic forms library for Angular 21 signal forms

a2ui. TypeScript

waddler. Modern SQL client

terraink. Terraink: The Cartographic Poster Engine that creates unique and customizable map posters

VibeSec-Skill. This skill helps Claude write secure code and prevent common vulnerabilities.

playwright-cli. CLI for common Playwright actions. Record and generate Playwright code, inspect selectors and take screenshots.

knope. A command line tool to handle all the tasks most developers find tedious.

Mythic. An open-source macOS game launcher with the ability to play Windows games through a custom implementation of Apple's Game Porting Toolkit, with support for multiple storefronts.

branchlet. Branchlet: A simple CLI Git worktree manager

terrazzo. Use DTCG tokens JSON to generate code for web, mobile, native apps, and more

smart-tree. Smart Tree: not just a tree, a philosophy. A context-aware, AI-crafted replacement for 20+ tools with MEM8 quantum compression, semantic search, AST-smart editing, and partnership memory. Crafted with care by human + AI—accept no knock-offs.

figma-console-mcp. Your design system as an API. Connect AI to Figma for extraction, creation, and debugging.

testronaut. Reaching New Frontiers in Frontend Testing

awesome-copilot. Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.

advanced-context-engineering-for-coding-agents.

capnweb. JavaScript/TypeScript-native, low-boilerplate, object-capability RPC system

ccpm. Project management skill system for Agents that uses GitHub Issues and Git worktrees for parallel agent execution.

spec-kit. 💫 Toolkit to help you get started with Spec-Driven Development

background-removal-js. Remove backgrounds from images directly in the browser environment with ease and no additional costs or privacy concerns. Explore an interactive demo.

sidequest. Redis-free background jobs for Node.js. Persist jobs in your existing Postgres, MySQL, SQLite, or MongoDB. A distributed, durable BullMQ alternative with a built-in dashboard.

looks-same. Node.js library for comparing images

agents. Multi-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLI

claude-task-master. An AI-powered task-management system you can drop into Cursor, Lovable, Windsurf, Roo, and others.

Second-Me. Train your AI self, amplify you, bridge the world

inter. The Inter font family

jscanify. The Javascript document scanning library.

llmstxt-site. directory of llms.txt file in the wild

survey-library. SurveyJS is an open-source JavaScript form builder library that allows developers to create dynamic forms, multi-step form wizards, and survey applications. It supports React, Angular, and Vue.js (Vue 3), and can also be used in applications built with plain JavaScript.

survey-creator. Embeddable JSON form builder for React, Angular, Vue, and plain JavaScript. Drag-and-drop UI, your backend.

angular-cli. CLI tool for Angular

twelve-factor. The Twelve-Factor Manifesto

ngx-quill. Angular (>=2) components for the Quill Rich Text Editor

playwright-ng-schematics. Adds Playwright Test to your Angular project

eslint-plugin-unicorn. More than 300 powerful ESLint rules

proposal-signals. A proposal to add signals to JavaScript.

coding-competitions-archive. Google Coding Competitions problem archive

nx. The Monorepo Platform that amplifies both developers and AI agents. Nx optimizes your builds, scales your CI, and fixes failed PRs automatically. Ship in half the time.

query. 🤖 Powerful asynchronous state management, server-state utilities and data fetching for the web. TS/JS, React Query, Solid Query, Svelte Query and Vue Query.

elysia. Ergonomic Framework for Humans

effect. Build production-ready applications in TypeScript

encore. The infrastructure platform for the intelligence era

ng-primitives. Headless, composable primitives for building accessible UI components in Angular.

compodoc. :notebook_with_decorative_cover: The missing documentation tool for your Angular, Nest & Stencil application

cva. Class Variance Authority

drizzle-orm. ORM

hono. Web framework built on Web Standards

pino. 🌲 super fast, all natural json logger

valibot. The modular and type safe schema library for validating structural data 🤖

tailwindcss. A utility-first CSS framework for rapid UI development.

tsx. ⚡️ TypeScript Execute | The easiest way to run TypeScript in Node.js

fullcalendar. Full-sized drag & drop event calendar in JavaScript

jodit-angular. Angular wrapper for Jodit && Hey. Due to the fact that I do not use Angular in my projects, I cannot fix plugin errors in a timely manner. If you want the plugin to develop, send PR or better become a contributor

Stacks-Editor. Stack Overflow's Combination Rich Text / Markdown Editor

angular-architecture. Examples of Angular Architecture Concepts

plandex. Open source AI coding agent. Designed for large projects and real world tasks.

ngx-tiptap. Angular bindings for tiptap

playwright-bdd. BDD testing with Playwright runner

angular-calendar. A flexible calendar component for angular 20.2+ that can display events on a month, week or day view.

awesome-angular. :page_facing_up: A curated list of awesome Angular resources

SWE-agent. SWE-agent takes a GitHub issue and tries to automatically fix it, using your LM of choice. It can also be employed for offensive cybersecurity or competitive coding challenges. [NeurIPS 2024]

OpenHands. 🙌 OpenHands: AI-Driven Development

retraced. 🔥 A fully open source audit logs service and embeddable UI easily deployed to your own Kubernetes cluster. Brought to you by replicated.com and boxyhq.com 🚀

awesome-playwright. A curated list of awesome tools, utils and projects using Playwright

cacheable. a robust, scalable, and maintained set of caching packages

devika. Devika is the first open-source implementation of an Agentic Software Engineer. Initially started as an open-source alternative to Devin.

rover. The CLI for Apollo GraphOS

shoelace. Shoelace is now Web Awesome. Come see what’s new!

typescript-book. The Concise TypeScript Book: A Concise Guide to Effective Development in TypeScript. Free and Open Source.

tiptap. The headless rich text editor framework for web artisans.

Kompilierer. Der Kompilierer der Deutschen Programmiersprache

system-design-101. Explain complex systems using visuals and simple terms. Help you prepare for system design interviews.

react-email. 💌 Build and send emails using React

TypeStat. Converts JavaScript to TypeScript and TypeScript to better TypeScript. 🧫

copybara. Copybara: A tool for transforming and moving code between repositories.

spartan. Cutting-edge tools powering Angular full-stack development.

DeskPad. A virtual monitor for screen sharing

homcc. Work From Home friendly distcc replacement

warrant. Warrant is a highly scalable, centralized authorization service based on Google Zanzibar. Use it to define, enforce, query, and audit application authorization and access control.

BlockNote. A React Rich Text Editor that's block-based (Notion style) and extensible. Built on top of Prosemirror and Tiptap.

StableStudio. Community interface for generative AI

playwright. Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

SOFA. The best way to create REST APIs - Generate RESTful APIs from your GraphQL Server

opencommit. top #1 and most feature rich GPT wrapper for git — generate commit messages with an LLM in 1 sec — works with Claude, GPT and every other provider, supports local Ollama models too

refine. A React Framework for building internal tools, admin panels, dashboards & B2B apps with unmatched flexibility.

ltex-ls. LTeX Language Server: LSP language server for LanguageTool :mag::heavy_check_mark: with support for LaTeX :mortar_board:, Markdown :pencil:, and others

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

unleash. Open-source feature management platform

professional-programming. A collection of learning resources for curious software engineers

ai-commit. CLI tool that use ChatGPT to generate commit message for your git repo.

ts-reset. A 'CSS reset' for TypeScript, improving types for common JavaScript API's

type-fest. A collection of essential TypeScript types

slate. A completely customizable framework for building rich text editors. (Currently in beta.)

create-tool. Single command Editor.js Tool generator

editor.js. A block-style editor with clean JSON output

analog. The fullstack meta-framework for Angular. Powered by Vite and Nitro

roadmap. Roadmap voting app for sharing product plan and get customer feedback.

router. A configurable, high-performance routing runtime for Apollo Federation 🚀

learning-stipends. Companies that support engineers with learning stipends

novu. The open-source communication infrastructure for agents and products

angular-challenges. Set of Angular challenges to practise and train on Angular

easydiffusion. An easy 1-click way to create beautiful artwork on your PC using AI, with no tech knowledge. Provides a browser UI for generating images from text prompts and images. Just enter your text prompt, and see the generated image.

slate-angular. Angular view layer for Slate

modern-errors. Handle errors in a simple, stable, consistent way

single-spa-angular. Helpers for building single-spa applications which use Angular

keystone. The superpowered headless CMS for Node.js — built with GraphQL and React

advanced-tables-obsidian. Improved table navigation, formatting, and manipulation in Obsidian.md

palette. 🎨 Soothing pastel theme to use within your projects!

sherlock. Hunt down social media accounts by username across social networks

ngx-bar-rating. Angular Bar Rating

tailwindcss. 💨 Soothing pastel theme for Tailwind CSS

rx-angular. Reactive Extensions for Angular.

awesome-selfhosted. A list of Free Software network services and web applications which can be hosted on your own servers

GooglePhotosTakeoutHelper. Script that organizes the Google Takeout archive into one big chronological folder

photon. ⚡ Rust/WebAssembly image processing library

nexus. Code-First, Type-Safe, GraphQL Schema Construction

pothos. Pothos GraphQL is library for creating GraphQL schemas in typescript using a strongly typed code first approach

action. TypeScript

css. The markup-driven CSS language and framework — readable by humans, reliable for agents.

howisFelix.today. Yes, that's a thing

yup. Dead simple Object schema validation

graphql-shield. 🛡 A GraphQL tool to ease the creation of permission layer.

ngx-colors. Simple yet elegant Material color picker for Angular

TUM. Notes, material and various stuff collected while attending TUM Master's Degree

typescript-notebook. Run JavaScript and TypeScript in node.js within VS Code notebooks with excellent support for debugging, tensorflowjs visulizations, plotly, danfojs, etc

hyperui. Free Tailwind CSS v4 components for your next project, designed to enhance your web development with the latest features and styles 🚀

maizzle. The modern email development framework.

dataloader. DataLoader is a generic utility to be used as part of your application's data fetching layer to provide a consistent API over various backends and reduce requests to those backends via batching and caching.

DgrmJS. Dgrm.net - flowchart editor. Works on desktop, phone and tablet. Has no dependency. Pure JavaScript.

graphql. RedwoodGraphQL

misbrands. The world's most hated IT stickers

microfrontend-resources. :fire: A curated list of resources about Micro frontends grouped by types

observer-spy. This library makes RxJS Observables testing easy!

friendly-words. The Glitch word list, packaged into an NPM module for easy use.

wasm3. 🚀 A fast WebAssembly interpreter and the most universal WASM runtime

nx-firebase. Firebase plugin for Nx Monorepos

zod. TypeScript-first schema validation with static type inference

Artemis. Artemis - Interactive Learning with Automated Feedback

github-stats. Better GitHub statistics images for your profile, with stats from private repos too

prisma. Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB

OpenSlides. The digital motion and assembly system

semver. Nx plugin to automate semantic versioning and CHANGELOG generation.

frontend. TypeScript

developer-roadmap. Interactive roadmaps, guides and other educational content to help developers grow in their careers.

mensa. Mensas erste nützliche Schlangen-Abmessungssoftware

TUM.sexy. A website providing links, redirects and tools related to the Technical University Munich :dancer::books:

github-readme-stats. :zap: Dynamically generated stats for your github readmes

metrics. 📊 An infographics generator with 30+ plugins and 300+ options to display stats about your GitHub account and render them as SVG, Markdown, PDF or JSON!

db-hafas. JavaScript client for the Deutsche Bahn HAFAS API.

harold. Compares frontend project bundles

apollo-angular. A fully-featured, production ready caching GraphQL client for Angular and every GraphQL server 🎁

tokyo-2019. Everything I ate and coffee I drank during my Tokyo 2019 trip 🍡☕🍛🍙🍱🍢🍜

directus. The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

strapi. 🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

jsqrcode. Javascript QRCode scanner

super-linter. Combination of multiple linters to run as a GitHub Action or standalone

instascan. HTML5 QR code scanner using your webcam

nest. A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀

terminal. The new Windows Terminal and the original Windows console host, all in the same place!

statping. Status Page for monitoring your websites and applications with beautiful graphs, analytics, and plugins. Run on any type of environment.

azure-boards-automate-state-transitions. Automate state transitions of parent work items based on child work item changes

devices.css. Pure CSS phones and tablets

XP.css. A CSS framework for building faithful recreations of operating system GUIs.

react-native-windows. A framework for building native Windows apps with React.

ProjectVisBug. FireBug for designers › Edit any webpage, in any state https://a.nerdy.dev/gimme-visbug

build-your-own-x. Master programming by recreating your favorite technologies from scratch.

managers-playbook. :book: Heuristics for effective management

scully. The Static Site Generator for Angular apps

pattern.css. CSS only library to fill empty background with beautiful patterns.

PowerToys. Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

decentralized-video-chat. 🚀 Zipcall- Acquired @ 250k users 🚀 Peer to peer browser video calling platform with unmatched video quality and latency.

stacks1. Your personal kanban to do and project manager

Best-README-Template. An awesome README template to jumpstart your projects!

code-resume. Build your own Resume 📖 in seconds

HeliosLauncher. ☀ Custom launcher for modded minecraft written in Electron and Node.js

blurhash. A very compact representation of a placeholder for an image.

intellij-community. IntelliJ IDEA & IntelliJ Platform

nx-ng-nest-universal. Nx Workspace with a seperated Nest App for Angular Universal SSR.

wasm-arduino-wifi. Running TinyGo/Rust/Assemblyscript on an ESP32 using WebAssembly.

skala. We weigh rebar deliveries on construction sites and match them with the order lists of the construction company

sunrise. CSS gradient sunrise :sunrise:

deploy-your-own-saas. List of "only yours" cloud services for everyday needs :black_flag:

LaTeX-Workshop. Boost LaTeX typesetting efficiency with preview, compile, autocomplete, colorize, and more.

KAP. Klinisches Anwendungsprojekt Zeug

MinecraftLauncher-core. Lightweight module that downloads and runs Minecraft using javascript / NodeJS

nodegui. A library for building cross-platform native desktop applications with Node.js and CSS 🚀. React NodeGui : https://react.nodegui.org and Vue NodeGui: https://vue.nodegui.org

sharp. High performance Node.js image processing, the fastest module to resize JPEG, PNG, WebP, AVIF and TIFF images. Uses the libvips library.

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

TUM.sexy. A website providing links, redirects and tools related to the Technical University Munich :dancer::books:

labsystem. The labsystem eLearning system for creating and managing hands-on courses.

sct.dev. My personal internet space. Hosted on Vercel and built using NextJS.

angular. Deliver web apps with confidence 🚀

nebular. :boom: Customizable Angular UI Library based on Eva Design System :new_moon_with_face::sparkles:Dark Mode

uppy. The next open source file uploader for web browsers :dog:

augury-labs. Experimental Angular developer tools

flex-layout. Provides HTML UI layout for Angular applications; using Flexbox and a Responsive API

revery. :zap: Native, high-performance, cross-platform desktop apps - built with Reason!

lighthouse. Automated auditing, performance metrics, and best practices for the web.

You-Dont-Know-JS. A book series (2 published editions) on the JS language.