Pavel Grinchenko

ultracite. A highly opinionated, zero-configuration linter and formatter.

LuLu. LuLu is the free open-source macOS firewall

turso. Turso is an in-process SQL database, compatible with SQLite.

prop-for-that. what JS knows, now CSS knows

mitata. benchmark tooling that loves you ❤️

typescript-tips-everyone-should-know. ✅ A curated collection of practical TypeScript patterns that improve safety, readability, maintainability, and developer experience. 🧠

sugar-high. ✏️ Super lightweight code syntax highlighter

transitions.dev. Collection of the most essential transitions for web apps, skill for agents and Refine tool for agents

orpc. Typesafe APIs Made Simple 🪄

clooks. TypeScript hook runtime for AI coding agents — write once, run safely, share across projects.

codiff. a fast local diff viewer

sortie. AI harness that you actually pilot

vitest-evals. A vitest extension for running evals.

scratch. A minimalist, offline-first markdown note-taking app

view-transitions-toolkit. TypeScript

alien-signals. 👾 The lightest signal library

stemdeck. Stemdeck is an modern stem extraction platform for musicians,producers and hobbyists, designed to isolate vocals, drums, bass, piano and guitar for practice, transcription, remixing, and creative audio workflows through a modern and interactive interface

astro-slop. The most complete and flexible Astro integration for LLMs and generating markdown versions of pages. Per-page .md siblings, llms.txt index, content negotiation, and link rel=alternate.

defuddle. Get the main content of any page as Markdown.

astro-nice-asset-filenames. Astro integration for short, readable asset URLs.

electrobun. Build ultra fast, tiny, and cross-platform desktop apps with Typescript.

alchemy-effect. Infrastructure as Effects

gradient-border-plugin. CSS

animate-text. TypeScript

fontpie. Get your layout shifts optimized with a CLI-generated piece of CSS

superpowers. An agentic skills framework & software development methodology that works.

web-components. @travelopia/web-components

gstack. Use Garry Tan's exact Claude Code setup: 23 opinionated tools that serve as CEO, Designer, Eng Manager, Release Manager, Doc Engineer, and QA

oat. Ultra-lightweight, zero dependency, semantic HTML, CSS, JS UI library. ~8KB min+gz.

get-shit-done. A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code by TÂCHES.

claude-code-tips. 40+ tips for getting the most out of Claude Code, from basics to advanced - includes a custom status line script and Claude Code running itself in a container. Also includes the dx plugin: skills for everyday dev workflows.

dopespec. TypeScript

sql. Nano Stores wrapper around SQLite or PGLite to generate reactive stores from SQL queries

pretext. Fast, accurate & comprehensive text measurement & layout

sandcastle. Orchestrate sandboxed coding agents in TypeScript with sandcastle.run()

harmonizer. TypeScript

grotesk. Python

ui. Astro UI library. Built for content-heavy websites.

delphitools. Collection of tools for designers and artists

react-doctor. Your agent writes bad React. This catches it

SpacetimeDB. Development at the speed of light

muxmuxmux. Typesafe state machines with minimal boilerplate. For React, Svelte and more.

nanotags. TypeScript

web-haptics. Haptic feedback for the mobile web

dockview. Zero dependency docking layout manager supporting tabs, groups, grids and splitviews. Supports React, Vue, Angular, and vanilla TypeScript.

commander.js. node.js command-line interfaces made easy

csskit. Refreshing CSS

claude-code-system-prompts. All parts of Claude Code's system prompt, 27 builtin tool descriptions, sub agent prompts (Plan/Explore/Task), utility prompts (CLAUDE.md, compact, statusline, magic docs, WebFetch, Bash cmd, security review, agent creation). Updated for each Claude Code version.

squirrelly. Semi-embedded JS template engine that supports helpers, filters, partials, and template inheritance. 4KB minzipped, written in TypeScript ⛺

errore. Errors as values for TypeScript. Fully type safe error handling.

nano_kit. An ecosystem of lightweight, modular, and performant libraries for building modern web applications, built around a push-pull based reactivity system.

peon-ping. Warcraft III Peon voice notifications (+ more!) for Claude Code, Codex, IDEs, and any AI agent. Stop babysitting your terminal. Employ a Peon today.

mitosis. Write components once, run everywhere. Compiles to React, Vue, Qwik, Solid, Angular, Svelte, and more.

skills. Skills for Real Engineers. Straight from my .claude directory.

vibe-kanban. Get 10X more out of Claude Code, Codex or any coding agent

custom-instructions.

claude-hud. A Claude Code plugin that shows what's happening - context usage, active tools, running agents, and todo progress

rtk. CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

jscpd. Copy/paste detector for programming source code, supports 223 formats. AI-ready with token-efficient reporter, skill and MCP server.

hey-api. 👨‍🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode, PayPal, AWS, Autodesk, and many more.

dorso. A macOS app that blurs your screen when you slouch.

alchemy. Infrastructure as TypeScript

better-result. Lightweight Result type for TypeScript with generator-based composition.

pi. AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

takopi. he just wants to help-pi!

compound-engineering-plugin. Official Compound Engineering plugin for Claude Code, Codex, Cursor, and more

vitest. Next generation testing framework powered by Vite.

bloom. A morphing pull-down button component for react.

superdiff. Superdiff provides a rich and readable diff for arrays, objects, texts and coordinates. It supports stream and file inputs for handling large datasets efficiently, is battle-tested, has zero dependencies, and offers a top-tier performance.

Hex. VOICE → WORDS

tart. macOS and Linux VMs on Apple Silicon to use in CI and other automations

pierre. pierre’s open source code

sam-audio. The repository provides code for running inference with the Meta Segment Anything Audio Model (SAM-Audio), links for downloading the trained model checkpoints, and example notebooks that show how to use the model.

DiariZen. A toolkit for speaker diarization.

pyannote-audio. Neural building blocks for speaker diarization: speech activity detection, speaker change detection, overlapped speech detection, speaker embedding

whisperX. WhisperX: Automatic Speech Recognition with Word-level Timestamps (& Diarization)

css-modules-kit. A toolkit for making CSS Modules useful.

teachyourselfCS-RU. Russian translation of https://teachyourselfcs.com/

picknplace.js. A proof of concept of a viable drag and drop alternative

OpenSpec. Spec-driven development (SDD) for AI coding assistants.

Mole. 🐹 Clean, uninstall, analyze, optimize, and monitor your Mac from the terminal.

trailbase. An open, sub-millisecond, single-executable Firebase alternative with type-safe APIs, built-in WebAssembly runtime, realtime subscriptions, auth, and admin UI built on Rust, SQLite & Wasmtime.

Handy. A free, open source, and extensible speech-to-text application that works completely offline.

bati. 🔨 Next-gen scaffolder. Get started with fully-functional apps, and choose any tool you want.

astro-editor. Astro Editor reads your Zod schemas and transforms frontmatter into smart forms. Get validation, proper field types, and MDX component insertion — all in a beautiful interface inspired by iA Writer.

takumi. Render JSX, HTML, and CSS to SVG or images. Drop-in next/og replacement.

h3. ⚡️ Minimal H(TTP) framework built for high performance and portability

casl. CASL is an isomorphic authorization JavaScript library which restricts what resources a given user is allowed to access

cli. A reference implementation for the specification that can create and configure a dev container from a devcontainer.json.

vaul. A drawer component for React.

webcoreui. Customizable Astro UI component library styled with Sass, with Svelte and React support.

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

van. 🍦 VanJS: World's smallest reactive UI framework. Incredibly Powerful, Insanely Small - Everyone can build a useful UI app in an hour.

marked. A markdown parser and compiler. Built for speed.

agent-prism. React components for visualizing traces from AI agents

actions-up. 🌊 Interactive CLI tool to update GitHub Actions to latest versions with SHA pinning

trigger.dev. Trigger.dev – build and deploy fully‑managed AI agents and workflows

modern-typescript-monorepo-example. A modern monorepo example using Typescript, PNPM and Turborepo.

pnpm-monorepo-example. Monorepo example using pnpm workspaces and conditional exports.

soukai. Javascript Active Record library

foundation. Tools for modern js

spectrum-ui. Spectrum UI ⭐ is a collection of re-usable components built using Aceternity UI Magic UI and ShadCN UI that you can copy and paste into your apps.

workout-cool. 🏋 Modern open-source fitness coaching platform. Create workout plans, track progress, and access a comprehensive exercise database.

graph. TypeScript

soketi. Next-gen, Pusher-compatible, open-source WebSockets server. Simple, fast, and resilient. 📣

p-retry. Retry a promise-returning or async function

awesome-ai-system-prompts. 🧠 Curated collection of system prompts for top AI tools. Perfect for AI agent builders and prompt engineers. Incuding: ChatGPT, Claude, Perplexity, Manus, Claude-Code, Loveable, v0, Grok, same new, windsurf, notion, and MetaAI.

lingo.dev. Open-source localization engineering tools. Connects to Lingo.dev localization engineering platform for consistent, quality translations.

studiocms. Dedicated SSR (Server-side-rendered) Astro native Headless CMS, built from the ground up for the Astro community and by Astro community members

fumadocs. The beautiful & flexible React.js docs framework.

overmind. Process manager for Procfile-based applications and tmux

neverthrow-pattern. TypeScript

dify. Production-ready platform for agentic workflow development.

formisch. The lightweight, schema-first, and fully type-safe form library for React, Solid, Vue, Svelte and more.

telefunc. Remote Functions.

assayo. Creates an HTML-report with analysis of commit statistics

crosspost. A JavaScript utility for posting across multiple social networks at once

automatisch. The open source Zapier alternative. Build workflow automation without spending time and money.

rellax. Lightweight, vanilla javascript parallax library

yt-dlp. A feature-rich command-line audio/video downloader

kit. The toolkit for AI devtools context engineering. Build with codebase mapping, symbol extraction, and many kinds of code search.

astro-iubenda. Astro integration to manage privacy policies, cookies and terms from Iubenda.

upscayl. 🆙 Upscayl - #1 Free and Open Source AI Image Upscaler for Linux, MacOS and Windows.

ts-morph. TypeScript Compiler API wrapper for static analysis and programmatic code changes.

bolt.diy. Prompt, run, edit, and deploy full-stack web applications using any LLM you want!

nix-darwin. Manage your macOS using Nix

cosmiconfig. Find and load configuration from a package.json property, rc file, TypeScript module, and more!

base16. A Framework for building Themes

starry-night. Syntax highlighting, like GitHub

tscircuit. Create real electronics with Typescript and React

type-gymnastics. Collection of wonderful TypeScript type gymnastics code snippets.

svelte-sonner. An opinionated toast component for Svelte. A port of @emilkowalski's sonner.

core. A toolchain for building scalable, enterprise-ready component systems on top of TypeScript and Web Component standards. Stencil components can be distributed natively to React, Angular, Vue, (+ more) and traditional web applications from a single, framework-agnostic codebase.

typed-channel. TypeScript

optimal-obs-settings. This is a GitHub repository made to help you squeeze some more performance from OBS.

codetour. VS Code extension that allows you to record and play back guided tours of codebases, directly within the editor.

asserttt. minimal API for testing types

graft. Graft is an open-source transactional storage engine optimized for lazy, partial, and strongly consistent replication—perfect for edge, offline-first, and distributed applications.

triplit. A full-stack, syncing database that runs on both server and client. Pluggable storage (indexeddb, sqlite, durable objects), syncs over websockets, and works with your favorite framework (React, Solid, Vue, Svelte).

inox-tools. Oxygen-free tools for Astronauts.

knip. ✂️ Find unused files, dependencies and exports in your JavaScript and TypeScript projects. Knip it before you ship it!

howler.js. Javascript audio library for the modern web.

nock. HTTP server mocking and expectations library for Node.js

huh. Build terminal forms and prompts 🤷🏻‍♀️

rampensau. Color palette generation function using hue cycling and simple easing functions.

spred. Simple and fast JavaScript reactive programming library.

intellij-luau. Intellij plugin for Luau language support

re-resizable. 📏 A resizable component for React.

swiper. Most modern mobile touch slider with hardware accelerated transitions

config. Configuration and tools for publishing and maintaining high-quality JavaScript packages

NextFaster. A highly performant e-commerce template using Next.js

proposal-async-context. Async Context for JavaScript

sqlite3_crdt. CRDT in SQLite (Pure C)

threlte. 3D framework for Svelte

figma-plugin-react-vite. 🧩 A figma plugin boilerplate, that simplifies building plugins with React + Vite!

ipatool. Command-line tool that allows searching and downloading app packages (known as ipa files) from the iOS App Store

zag. Build your design system in React, Solid, Vue or Svelte. Powered by finite state machines

mastra. Mastra is the modern TypeScript framework for AI-powered applications and agents.

ultrahtml. TypeScript

typia. Super-fast/easy runtime validators and serializers via transformation

image-palette-webgpu. A tiny zero-dependency browser package that extracts dominant color or color palette from an image using WebGPU API with various algorithms

syncpack. Consistent dependency versions in large JavaScript Monorepos.

react-bits. An open source collection of animated, interactive & fully customizable React components for building memorable websites.

ky. 🌳 Tiny & elegant JavaScript HTTP client based on the Fetch API

tremor. Copy & Paste React components to build modern web applications.

Chart.js. Simple HTML5 Charts using the <canvas> tag

embla-carousel. A lightweight carousel library with fluid motion and great swipe precision.

observable-sqlite. Example of sqlite with reactive queries / live queries.

ts-expect. Checks TypeScript types match expected values

cloudflare-docs. Cloudflare’s documentation

hyperfine. A command-line benchmarking tool

vale. :pencil: A markup-aware linter for prose built with speed and extensibility in mind.

publint. Lint packaging errors

Roo-Code. Roo Code gives you a whole dev team of AI agents in your code editor.

cline. Autonomous coding agent as an SDK, IDE extension, or CLI assistant.

operating-system-in-1000-lines. Writing an OS in 1,000 lines.

react-toastify. React notification made easy 🚀 !

tesseract.js. Pure Javascript OCR for more than 100 Languages 📖🎉🖥

surplus. High performance JSX web views for S.js applications

go-starter-kit. Go Rest API starter kit / Golang API boilerplate base on Chi framework

pocketbase. Open Source realtime backend in 1 file

xoid. Framework-agnostic state management library designed for simplicity and scalability ⚛

sqlime. Online SQLite playground

signia. Reactive signals that scale, by tldraw.

pragmatic-drag-and-drop. Fast drag and drop for any experience on any tech stack

fancy. TypeScript

livekit. End-to-end realtime stack for connecting humans and AI

loki. 👁 Visual Regression Testing for Storybook

memlab. A framework for finding JavaScript memory leaks and analyzing heap snapshots

slim. Slim(toolkit): Don't change anything in your container image and minify it by up to 30x (and for compiled languages even more) making it secure too! (free and open source)

distroless. 🥑 Language focused docker images, minus the operating system.

regexparam. A tiny (394B) utility that converts route patterns into RegExp. Limited alternative to `path-to-regexp` 🙇‍♂️

litdb. Lightweight RDBMS agnostic TypeScript/JS abstraction for SQLite, PostgreSQL and MySQL

rerun. Visualize, query, and stream to train on multimodal robotics data.

my-interactive-workspace. My Interactive Workspace

ogl. Minimal WebGL Library

vanilla-calendar-pro. The Vanilla Calendar Pro is a versatile JavaScript date and time picker component with TypeScript support, making it compatible with any JavaScript frameworks and libraries. It is designed to be lightweight, easy to use, and feature-rich, without relying on external dependencies.

better-fetch. Advanced fetch wrapper for TypeScript

react-scan. Scan and fix React performance issues

web-llm. High-performance In-browser LLM Inference Engine