TypeScript Libraries and Tools Page 5 of 7

The TypeScript semantic layer for ClickHouse.

659 zero-dependency React 19 + Tailwind v4 components, 63 blocks, 1023 icons — Ticket Stub aesthetic, MIT. Copy-paste or CLI.

Open-source library of animated React components and blocks, built with Tailwind CSS and Framer Motion, installable via the shadcn CLI.

Pretext is a tiny (15KB gzipped) zero-dependency TypeScript library that handles text layout, measurement, and rendering entirely outside the DOM. Created by Cheng Lou (React core team, Reason, Midjourney), it delivers up to 500x faster performance than traditional DOM...

The agent analytics platform for monitoring and improving your AI agents in the wild. No more digging through logs, fix agents before users complain.

The Universal Tool Calling Protocol (UTCP) is an open standard, as an alternative to the MCP, that describes how to call existing tools rather than proxying those calls through a new server. After discovery, the agent speaks directly to the tool’s native endpoint (HTTP, gRPC...

PGlite is a WASM Postgres build packaged into a TypeScript client library that enables you to run Postgres in the browser, Node.js, Bun and Deno, with no need to install any other dependencies. It is only 3mb gzipped and has support for many Postgres extensions, including...

Visimer brings “what you see is what you get” editability to Mermaid diagrams. Rename labels, change shapes, add new nodes, etc. by live editing the rendered diagram.

Rstest is a testing framework powered by Rspack. It delivers comprehensive, first-class support for the Rspack ecosystem, enabling seamless integration into existing Rspack-based projects.

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

The MathLive library includes a <math-field> web component that provides an easy-to-use interface for editing math.

Jazz is an open-source framework for building local-first apps, removing 90% of the backend and infrastructure complexity. Get real-time sync, storage, auth, permissions, instant UI updates, file uploads, and more — all on day one.

A production-grade animation library for the web. Free and open source. Create stunning web animations for React, JavaScript and Vue.

Toolcraft is an open-source starter kit and UI library for building custom design apps with AI. Use it to create small creative products, internal utilities, interactive experiments, and tools tailored to your workflow.

Visual precision for building with coding agents. Measure, inspect, and capture exactly what you see in the browser.

wraplet is a small JavaScript/TypeScript framework for projects that work directly with the actual DOM (server-rendered apps, jQuery legacy, multipage sites, plain HTML, etc.).

MCPcat is an analytics platform for MCP server owners 🐱. It captures user intentions and behavior patterns to help you understand what AI users actually need from your tools — eliminating guesswork and accelerating product development all with one-line of code.

A fun, interactive spinner wheel built with React and TypeScript — ideal for random name picking, raffles, giveaways, classroom activities, and more!.

Pdfnative is a next-generation PDF generation library built from the ground up in pure TypeScript. It requires zero runtime dependencies and delivers enterprise-grade PDF compliance including ISO 32000-1 (PDF/A) at four conformance levels.

A framework for building terminal apps, built on OpenTUI + React. Gridland apps work in the browser and terminal.

agentgit is a git host built for AI agents. git push https://agentgit.co/ creates the repository; there is no signup, no token and no SSH key. Refs are append-only, so nothing an agent pushed can be force-pushed over or deleted.

Animated page transition for major SSR frameworks and browsers, including Safari.

Write actions, a database schema, and auth as TypeScript files in a typebase/ folder inside your app. Your frontend calls them like local functions, end-to-end typed, zero REST boilerplate.

OpenSpec is a lightweight and configurable framework for creating and managing software specifications.

Headless, type-safe, composable tools for building modern web applications that work naturally for developers and reliably for agents.