TypeScript Libraries and Tools Page 3 of 3

A git-native, framework-agnostic, open standard for defining AI agents. Version-controlled config that exports to Claude Code, OpenClaw, Lyzr Agent, Chimera, NanoBot, CrewAgent, and Agents SDK.

Share real-time progress from any process, anywhere. Works in browsers, terminals, and your favorite programming languages.

A TypeScript/JavaScript library for quickly building performant declarative user interfaces without the use of a virtual DOM.

A simple flashcard app focused on quick card creation and distraction-free practice.

Pretty Diff is a language aware code comparison tool, beautifier, minifier, and parser for a variety of web oriented languages.

ScrollMovie is the library that enables you to animate background image as you scroll the window.

Embed the tinyDialog human-feedback tool into your website or webapp to collect insightful responses from your customers.

A Typescript tool to write configs with types. Manage your configs as code. Remove type errors, make configs easily shareable. Tool is installable via NPM, can be adopted incrementally!.

Dead simple Object schema validation.

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...

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.

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!.

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

Runtime TypeScript and ESM support for Node.js.

An advanced 3D Gaussian Splatting renderer for Three.js.

Datastar is a lightweight framework for building everything from simple sites to real-time collaborative web applications.

JavaScript library to draw smooth curves and straight lines with your mouse, finger or any pointing device.

VoltAgent is an open-source TypeScript framework that acts as this essential toolkit. It simplifies the development of AI agent applications by providing modular building blocks, standardized patterns, and abstractions.

Corgi is a blazing-fast, fully offline VIN decoder built with TypeScript. Powered by an optimized VPIC database, it delivers comprehensive vehicle information with zero network dependencies and lightning-fast performance across Node.js, browsers, and Cloudflare Workers.

Per-component Internationalisation solution for JS application focusing on scalability. Type-Safe. Translate with AI. Edit Visually.

React Email is a next-generation collection of unstyled components for creating beautiful emails using React, Tailwind, and TypeScript.

Hypertune is the most flexible platform for feature flags, A/B testing, analytics and app configuration. Built with full end-to-end type-safety, Git-style version control and synchronous, in-memory, local flag evaluation.