index
269 entriesTools, libraries and write-ups I saved while building. See my stack for what I reach for first.
269 entries
Unstyled, accessible one-time-passcode input for React.
Lightweight, performant TypeScript ORM with Drizzle Studio.
Animation library (formerly Framer Motion) for React, JavaScript and Vue.
Modular, type-safe schema library with a small bundle size.
Composable caching with TTL, stale-while-revalidate and request deduplication.
Accessible React components you copy into your project, built on Tailwind CSS.
A Result type for TypeScript with a single contract for people and tools.
End-to-end typesafe APIs using TypeScript inference.
Pure TypeScript toolkit for reading, writing and converting video and audio.
Open-source diff and code rendering library built on Shiki.
Product tours and element highlights in vanilla JavaScript.
Browser automation CLI for AI agents.
Write an API once and get a typed client, a REST API with OpenAPI and typed streams.
Codebase intelligence for TypeScript and JavaScript: hotspots, duplication, boundaries.
Open-source file tree library with git status, drag and drop and virtualization.
Named .localhost URLs instead of port numbers, for humans and agents.
A 5KB WebGL globe library.
A TypeScript logger for wide events and structured errors.
Typed, tree-shakable SVG and Canvas charts built on a grammar of graphics.
Local drop-in replacements for external services in CI and sandboxes.
AI-safe .env files: schema and validation, with secrets kept from agents.
Renders JSX to images without a headless browser, for example OG cards.
WebGPU shader components for React, Vue, Svelte, Solid and Framer.
AJAX, WebSockets and server-sent events directly in HTML attributes.
A WebGPU library where one shader renders in the browser and headless Node.
Dependency-free text morphing for interfaces.
Morph any SVG icon into another with spring physics and zero dependencies.
One small API over S3, R2, Vercel Blob, GCS, Azure and more storage backends.
A fast Markdown parser and renderer for Angular, React, Svelte, Vue and more.
Compile-time authorization proofs for TypeScript, with no runtime cost.
Measure and align anything on a page: x-ray mode, rulers and font metrics.
A zero-dependency spreadsheet engine reading and writing XLSX, CSV and ODS.
Privacy-first, self-hosted CAPTCHA alternative using proof-of-work.
Twenty-seven isometric line figures for the web that follow the pointer.
Compiles ordinary TypeScript into a small native binary with no Node or V8.
File uploads in React straight to any S3-compatible service with minimal setup.
A fast JavaScript syntax highlighter covering dozens of languages.
JSON Schema validation that compiles for speed and runs where codegen is forbidden.
Mounts a JavaScript object as a real filesystem for editors, CLIs and agents.
Runs Node.js, Next.js and Vite entirely in the browser, in about 250 KB.
Zero-dependency barcode and QR code generator with 40+ formats.
An ahead-of-time JavaScript compiler.
Compiles a fetch handler to a static native binary with Porffor, no Docker, and deploys it.
Exposes pointer, scroll, size and battery state as live CSS custom properties.
react-doctor for prose: a 0-100 score for Markdown and component text, built for CI.
OpenCode inside Discord: each project a channel, each session a thread.
`npx fledgling add` sets up a new monorepo package on npm.
Runs only the Playwright or Vitest tests a code change could affect.
"Skills for real engineers", taken from Matt Pocock's .agents directory.
A code knowledge graph that stays in sync, so coding agents navigate faster.
Turn any website into a tiny, fast desktop app.
A skill that stops a coding agent from burying the answer, with ADHD-friendly output.
Skills for designers and engineers by Emil Kowalski.
Terminal multiplexer for running several AI coding agents, with live agent status.
Product analytics with session replay, feature flags, experiments and surveys.
Cookie-free, lightweight web analytics you can self-host. Plans from $9 a month.
A coding-agent skill for multi-phase security audits with verified findings.
Open-source analytics, self-hosted or cloud, with heatmaps and session recordings.
A self-improving RLM agent for coding workflows and long-running autonomous tasks.
Fast Rust library for PDF inspection, classification and text extraction.
Full-stack TypeScript CMS on Astro, billed as WordPress's spiritual successor.
AGPL-3.0, cookie-free analytics with session replay, funnels and journeys.
Free map components for React and shadcn with a one-command setup.
Toolkit for building native desktop apps.
Agent skills for building polished interfaces, from animation to UI details.
Open-source web and product analytics with funnels, retention and session replay.
A portable, lightweight, self-contained virtual machine.
Open-source, cookie-free web analytics; self-host it or use the hosted version.
Download any video from your terminal.
Opinionated Oxlint rules that reject low-evidence TypeScript patterns.
Self-hosted Durable Objects: run Workers code unchanged, with data in your own bucket.
Postgres rewritten in Rust.
FUSE-based file system for replicating SQLite databases across machines.
A rootless Android app that boots Alpine Linux so you can run containers.
A dependency-free bash script for security and performance auditing of Linux servers.
An agent-first linter for Tailwind design systems.
In-process OLAP SQL engine powered by ClickHouse.
Node.js and React bindings for Zed's GPUI to build native desktop apps.
Self-hosted analytics that runs on Cloudflare Workers and R2. MIT.
A curated sound palette that gives buttons and toggles audio feedback.
Server-first React framework on Cloudflare with React Server Components.
Open-source Playwright library for AI browser regression tests with caching.
MCP server for the Cloudflare API.
Self-hosted dead man's switch that sends encrypted messages if you stop responding.
A single static binary giving agents deep memory over large datasets.
Live USB device tree in your terminal.
An experimental Rust-native build tool for React apps.
Diffs function call stacks across git commits for 22 languages.
A Git forge on Cloudflare Durable Objects.
Bun WebView tooling with a screenshot pipeline, as a Claude Code plugin.
A design skill that generates several UI variations to iterate on.
A non-production Postgres text-search extension for testing compatible SQL.
Lets many threads and processes write one SQLite database at the same time.
An AI skill for compact, premium landing pages with precise spacing.
Self-hosted, cookie-free analytics as one small binary with SQLite built in.
A readable scripting language for HTML interactivity, from the htmx authors.
Run GitHub Actions locally.
TypeScript infrastructure-as-code for Cloudflare and AWS, with local emulation.
AI-driven end-to-end testing for web and mobile, with an MCP server.
An AI platform engineer that writes manifests and ships them through GitOps.
Rust library by Firecrawl that converts Office files and PDFs to Markdown.
Error tracking, performance and uptime monitoring in one platform.
Animated React components installable through the shadcn CLI.
Daniel Rotter on taming z-index with stacking contexts.
shadcn/ui-style components on Tailwind CSS that work without React.
A native SSH picker and key manager with SFTP and cloud VM sync.
A toolkit for building your own Astro component library, not for shipping one.
Primitives for AI-native interfaces: loading states, thinking traces and streaming text.
Free, open-source screenshot and screen recorder for macOS.
Incident management, on-call, logs and error tracking in one platform.
Faster GitHub Actions runners with quicker caches and Docker builds.
A markdown-first, zero-config documentation framework on Astro and Vite.
A professional design tool that agents and people drive together.
A skill for scaffolding and reviewing Rust desktop apps with GPUI.
A skill for PlanetScale-inspired, document-like technical marketing pages.
Gradual rollouts, health checks and instant rollback for Cloudflare Workers.
Renders a 3D model, SVG or image through Bayer, halftone or Floyd-Steinberg dither.
Open-source screen recorder for Mac, Windows and Linux with shareable links.
Checklists for websites, web apps, mobile apps, components and flows.
Linear on reworking CI to keep up with AI-generated changes.
Cloudflare's open-source AI operating system: an agent and workspace per person.
A free, open-source Photoshop alternative for Mac.
Web data API for agents: scrape, crawl, search and brand lookups.
Open-source self-hosting platform for apps, databases and 280+ services.
Component library built on Base UI, with 55 components.
Visual CSS editor for your real site; an AI agent writes changes into source.
JavaScript animation library with four preset motions on the Web Animations API.
Cookieless product analytics with funnels, goals and a built-in AI analyst.
A monospaced pixel-style font that includes box-drawing characters.
A curated collection of resources for design engineers.
Free installable design systems for agents, so they get consistent product taste.
Curated reference of small design decisions that shape better interfaces.
Free API that checks whether an email or domain is a disposable provider.
The container platform for building, sharing and running containerised apps.
An iximiuz Labs tutorial on building smaller container images with multi-stage builds.
Open-source, self-hostable PaaS for deploying and managing applications and databases.
A TypeScript API to add, verify and monitor customer domains across hosts.
A self-run email app where conversations read like a chat (in development).
Hand-drawn UI controls with a fresh pen sketch on every mount.
A self-contained code editor that lives in your terminal.
Git-compatible mirror network so agents clone fast without hitting GitHub limits.
Computational gastronomy: explore flavour pairings and turn them into recipes.
Sequenced courses on AI research, system design and ML math for developers.
Cookie-free hosted analytics with UTM tracking and email reports.
A system and component set with fluid hover, motion and surfaces.
Predicts user intent from mouse movement and keyboard navigation to time prefetching.
Shopify Engineering on compressing agent context to raise throughput and cut cost.
Cursor's research post on hosting Git repositories at huge scale.
A Git host without accounts: mint a token, pick a name and push.
Raycast's tool for building and sharing Mac apps by chatting with AI.
A statically typed functional language running on the Erlang runtime.
A set of CSS specimens plus an agent skill, from Vojta Holik.
A Rust desktop framework with data tables, docking, charts and a code editor.
Style sheets compiled into a single raymarching shader, no Three.js.
Copy-paste UI blocks and templates installable through the shadcn CLI.
How an abandoned domain gave control over phone-network infrastructure.
Turns a home network into a private platform for deploying apps.
PlanetScale on debugging live database connections.
Breakdown of Linear's speed: local-first sync, MobX and keyboard-first design.
Design vocabulary and expertise for agents to build, refine and follow a design system.
Wrangler now ships a harness for integration tests against a production build.
Directory of services an agent can reach: APIs, GraphQL and MCP servers.
Concise UI rules, for example making nested border radii concentric.
Components whose behaviour is complete down to the frame; you supply the style.
Drop-in replacement for GitHub runners at a lower price.
An npm library for justified text without rivers or stranded words.
Cloudflare's component library: about 50 components, charts and a CLI.
An interactive guide to serving generative models in production.
A loop where in-app feedback reaches PostHog and a Cursor cloud agent fixes it.
A tiny Linux-like OS in TypeScript with 60+ Unix commands, for browsers and Node.
Streaming replication for SQLite.
Lightweight library of loading indicators for React.
Self-hosted log analytics for ClickHouse and VictoriaLogs in one binary.
Realtime backend for Cloudflare Workers with typed queries and live subscriptions.
End-to-end UI testing for iOS, Android and web with a CLI and Studio.
Email scanners pre-fetch magic links and burn the token; add an interstitial page.
Send, receive and organize email for your own domains, deployable on Cloudflare.
An AI skill that runs an autoresearch loop to speed up your site.
Ten mobile web problems and their fixes, from sticky hover to input zoom.
An open-source team of AI bots inside a chat app, using your own API key.
Markdown-friendly MDX components: callouts, steps, terminals and charts.
Zig-native web framework with file-based routing, SSR and typed APIs.
A shared workspace where your agents build their own generative UI.
Privacy-first Google Analytics alternative with revenue attribution and an MCP server.
Desktop apps in Go with a web frontend or native UI, shipped as one small binary.
Turns Laravel apps into native desktop and mobile apps.
Ultra-light semantic HTML and CSS UI library with zero dependencies.
Animated, interactive React components built with Tailwind CSS and Motion.
A compiler-first take on React's model (hooks, Suspense) without the virtual DOM.
OG images made simple, installable with the shadcn workflow.
A self-hosted control room for coding agents with shareable multiplayer sessions.
A browser-based control panel for managing supported gaming mice in one place.
Self-hostable deployment platform with free SSL, instant rollbacks and an MCP.
Optimize and convert images and videos on top of ImageMagick and FFmpeg.
Fast, light Docker and Linux machines on Mac; a drop-in Docker Desktop replacement.
A free animated component library: loaders, backgrounds and effects.
CLI to browse OSS perk programs and check whether your project qualifies.
Use overscroll-behavior: none only for fine pointers, so touch keeps pull-to-refresh.
Manage content and media inside a GitHub repository, with no database or extra backend.
Stripe billing in TypeScript: plans in code, webhooks and entitlements handled.
A peer-to-peer runtime for building and sharing apps without servers.
Design on a canvas right where you code; formerly pencil.dev.
A PDF zine from jvns.ca about performance (the clip itself came through empty).
Compiles TypeScript ahead of time to native executables, no Node.js needed.
Postgres inspection and live logs for people and AI agents.
A fast open-source Postgres terminal in Rust with pgbot built in.
Cookie-free analytics hosted in Germany, with funnels and session drill-downs.
Make a game with your coding agent and play builds on a real handheld device.
A portable UI runtime that turns component code into native pixels.
A ruleset that makes a coding agent write the least code that works.
A design layer for humans and AI that turns a React repo into a design sandbox.
A fast local client for GitHub PRs.
Scans your code before deploy for leaked keys, missing env vars and lapsed certs.
PlanetScale on what goes wrong when Postgres tables get huge.
An agent prompt for moving a codebase's outbound email to Cloudflare Email Service.
Native desktop apps in Go, TypeScript or Rust with fine-grained reactivity (pre-alpha).
React debugging that traces a render to its cause and diffs two moments or sessions.
Open-source screen recorder with auto-zoom and animated cursors for demos.
A real-time TypeScript sync engine (pre-1.0).
2,700+ free open-source SVG icons in outline and filled weights, MIT licensed.
Design-forward shadcn/ui components and blocks with MCP support.
Actor-based infrastructure for AI agents and realtime apps.
Tor Project guide to running a Snowflake proxy that helps censored users reach Tor.
Flexible JavaScript plugins on top of a fast Rust Markdown and MDX engine.
Tailwind CSS utilities for fading scroll-container edges based on scroll position.
Lightweight CSS library with native htmx integration for loading and swap states.
Self-hosted dashboard for AWS SES deliveries, bounces and complaints.
Admin dashboard UI blocks and components with a CLI and MCP.
Cookie-free, EU-hosted analytics that stores no IP addresses.
Wires up Cloudflare, Tailscale, Docker, Kamal and GitHub once so every git push deploys.
Six GitHub settings maintainers can enable in under 30 minutes.
GitHub-hosted runners already include browsers; skip Playwright's install step.
Tiny, dependency-free text roll animation for UI labels.
A Tailwind plugin for smoother, layered shadows.
Supply-chain security for open-source dependencies.
A userspace emulator for Windows and Linux binaries, aimed at security research.
A component library with charts, marquee, QR codes and MCP components.
`ssh-import-id gh:<username>` fetches a user's public keys from GitHub.
An SDK for browser agents with self-healing actions.
Automated penetration testing that finds and fixes vulnerabilities before release.
A library of SVG logos.
Open-source skill files that stop coding agents from generating generic frontend design.
A browser that runs inside your terminal.
VS Code inside your terminal.
PlanetScale on Neki, sharded Postgres.
Interface components drawn from real design systems, as a build reference.
Bryan Cantrill on why technologists must not sow fear about AI.
A running record of visual references that shape the author's taste.
Supabase-compatible backend in one process: Postgres, Auth, Storage and Realtime.
A small Rust relational database with PostgreSQL-style SQL, off the browser's main thread.
PostHog on cutting AI token spend: trim AGENTS.md, audit MCP, use caching.
UI transitions to copy and paste, or install through an agent skill.
A gateway where agents search API endpoints by task and call them with one token.
Components for the small details that make an interface feel trustworthy.
Monorepo build system that avoids repeating work across developers, CI and agents.
Distilled UI lessons from the best design-engineering skills.
Privacy-first, cookieless web analytics.
A React hook that re-renders when a folder on disk or in browser storage changes.
A simple, fast, safe compiled language.
Disposable end-to-end encrypted group chat rooms.
A browser tool to turn SVG artwork into 3D objects.
Vercel's brand guidelines for report websites, written as a design.md agent file.
Neon on lakebase storage that treats the write-ahead log as the source of truth.
Full-stack framework pairing a small config language with React, Node and Prisma.
Five sites worth knowing for design engineers, from a tweet.
Modular CSS library that brings terminal-UI aesthetics to the browser.
Trylle benchmarks a WAL workload across AWS S3, S3 Express, Tigris and Cloudflare R2.
How Rivet gives every actor its own SQLite database on S3-tiered storage.
A C-like language that compiles to plain HTML and CSS with zero JavaScript.
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