typescript
Execute TypeScript on Node using SWC.
A JIT compiler for running TypeScript and JavaScript code in Node.js without compilation, built on top of SWC with full ESM support for Node.js 24 and above.
The modern framework for fast websites
Zero configuration. Lightning-fast builds. Deploy anywhere — one install. Static site generation for Vite — no framework, no components, no magic.
Write JavaScript (or TypeScript, or JSX) functions that return HTML. Get a complete static site with file-based routing, dynamic pages, data loading, an asset pipeline, sitemap, RSS, Pagefind search, and a live dev server.
A fast, friendly linter for JavaScript, TypeScript, and more.
Flint is an experimental new "hybrid" linter that combines the performance of modern dev tooling with best-in-class comprehensive developer experience.
Next generation toolkit for web3D and photorealistic graphics.
Threepipe is a modern 3D framework built on top of three.js, written in TypeScript, designed to make creating high-quality, modular, and extensible 3D experiences on the web simple and enjoyable.
Mermaid diagrams as themeable SVG.
Pele is a lightweight open source library that renders Mermaid diagrams to SVG, themed with CSS variables.
Pure JavaScript DOM-to-PDF Engine.
dompdf.js is a pure-frontend DOM-to-PDF engine powered by TypeScript, Web Workers, Rust, and WebAssembly. It reads the layout already computed by the browser and generates primarily vector-based PDFs directly in the browser, without a server, jsPDF, or a screenshot-based PDF pipeline.
the Headless WYSIWYG Editor.
The Tiptap Editor is a headless, framework-agnostic rich text editor that's customizable and extendable through extensions. Its headless nature means it comes without a set user interface, offering full design freedom (for a jumpstart, see linked UI templates below). Tiptap is based on the highly reliable ProseMirror library.
The Open-Source Charting Core by LuxAlgo.
Fast, extensible financial charts for the web. The open-source core of Vela by LuxAlgo.
Open source SDK for AI agents in Python and TypeScript. A model-driven approach to building AI agents in just a few lines of code.
Strands Agents is an open-source SDK for building and running AI agents in Python and TypeScript. Choose Strands when you would otherwise write your own agent loop: it runs in your process with no hosted control plane, and it covers the jobs a hand-rolled loop grows into. In one SDK you get lifecycle controls (turn limits, token budgets, cancellation, stop reasons), tools and structured output, MCP, multi-agent patterns, memory and sessions, model portability, streaming, guardrails, tracing, and evals.
Fig is a small TypeScript UI runtime for building apps and metaframeworks.
A TypeScript re-implementation of React: fibers, lanes, scheduling, hooks, streaming SSR, and selective hydration — without the legacy cruft.
Vento is the Galician word for wind but also a new JavaScript-based template engine. It's inspired by other engines, such as Nunjucks, Liquid, Eta, and Mustache.
Fediverse bots, as standalone servers. Standalone ActivityPub bots in TypeScript.
BotKit is a TypeScript framework for standalone ActivityPub bots. No Mastodon account and no 500‑character limit: your bot runs as a complete fediverse server, and it fits in a single file.
Build integrations with AI. Integrations for your products & agents
Connect your product & agents to 900+ APIs, on infrastructure built for scale.
Nango is an open-source platform for building product integrations. It supports 900+ APIs and works with any backend language, AI coding tool, and agent SDK.
The JavaScript Oxidation Compiler.
Oxlint (/oʊ-ɛks-lɪnt/) is a high-performance linter for JavaScript and TypeScript built on the Oxc compiler stack.
Opinionated Oxlint rules for rejecting low-evidence TypeScript and JavaScript patterns.
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A chart grammar you don't have to outgrow.
A typed, tree-shakable chart grammar for SVG and Canvas. Compose marks, views, scales, transforms, interactions, and motion with compact primitives or D3-compatible inputs.
Modular cross-runtime WebGPU library for shaders, 3D scenes, GPU tensors, neural networks, and math viz.
vgpu is a TypeScript library for WebGPU: typed shader imports, a tiny gpu-first API, and the same code running in the browser, headless Node, and your test suite.
Secure code execution for AI applications.
run executes untrusted JavaScript and type-stripped TypeScript in a hardened QuickJS sandbox. Guest code can access only the host functions you provide.
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Offline-first SQL sync with Typescript and Rust cores.
Syncular keeps an SQLite database on each client and synchronizes it through a server-owned commit log. Apps read from local SQLite and continue to work offline. A write updates local state immediately, enters an outbox, and is checked by the server when it syncs.
Build Terminal UIs with HTML, CSS and DOM.
TermDOM is a JavaScript library that displays HTML and CSS in the terminal. It draws actual DOM nodes to terminal output and redraws the screen when they mutate, so TUIs and interactive CLIs can be written with vanilla JavaScript or any frontend web framework.
PDF structure, built for speed. fast, open-source PDF to Markdown.
A Rust-powered, open-source parser that classifies PDFs and turns native text into clean, position-aware Markdown. Use it from Node.js or the bundled CLI, with packages also available from PyPI and crates.io.
Write Native with TypeScript.
Render native platform UI with direct access to native APIs automatically backed by TypeScript. ⚡ Write Native with TypeScript ✨ Best of all worlds (TypeScript, Swift, Objective C, Kotlin, Java, Dart). Use what you love ❤️ Angular, React, Solid, Svelte, Vue with: iOS (UIKit, SwiftUI), Android (View, Jetpack Compose), Flutter and you name it compatible.
NativeScript empowers you to access native APIs from JavaScript directly. Currently iOS, Android, and visionOS runtimes are provided for rich mobile development across a variety of diverse use cases.
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Inferno is an insanely fast, React-like library for building high-performance user interfaces on both the client and server.
The main objective of the InfernoJS project is to provide the fastest possible runtime performance for web applications. Inferno excels at rendering real time data views or large DOM trees.
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the elegant TypeScript UI framework.
Ripple is a TypeScript-first UI framework built around .tsrx files, fine-grained reactivity, scoped styles, and a small runtime. It pairs the authoring feel of JSX with template-native control flow and TypeScript setup that can live right beside the UI it feeds.
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A dashboard where every widget is a function.
No query builder, no plugin format, no YAML dialect to learn. A widget is a TypeScript file on disk that returns data. The platform runs it on a schedule, on an MQTT message or on a webhook, checks what came back against a typed schema, and pushes it to every open tab.
An unfaithful port of Linq to Sql to Typescript.
A type-safe query builder for TypeScript. Queries are expressed as inline arrow functions, parsed into an expression tree, and compiled into SQL for PostgreSQL or SQLite. The API is similar to DotNet's LINQ-based frameworks.
codebase intelligence for typescript and javascript.
AI made writing code fast. Keeping a codebase coherent is now the hard part. Fallow finds what is unused, duplicated, overly complex, or drifting across boundaries, and can add the one thing static tools cannot: what actually runs in production.
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Make any TypeScript Function Durable.
use workflow brings durability, reliability, and observability to async JavaScript. Build apps and AI Agents that can suspend, resume, and maintain state with ease.
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Create, calculate, and format money safely
An immutable library for expressing monetary values in JavaScript and TypeScript.
Money is complex, and the primitives of the language aren't enough to properly represent it. Dinero.js is a JavaScript library that lets you express monetary values, but also perform mutations, conversions, comparisons, formatting, and overall make money manipulation easier and safer in your application.
Terminal UIs on a Native Zig Core. OpenTUI is a library for building terminal user interfaces (TUIs).
Build rich, interactive terminal interfaces with TypeScript bindings, first-class React/Solid support, and a C ABI for any language.
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TypeScript-to-Native Compiler.
Zero-runtime TypeScript. scriptc compiles ordinary TypeScript into small, fast native executables — no Node, no V8, no JavaScript engine in the binary.
No changes to your code. No annotations, no dialect — the same TypeScript you run on Node, type-checked by the real TypeScript compiler and compiled to native. What compiles behaves byte-for-byte like Node.
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An organic glow that hugs the edge of your screen — zero-dependency Canvas 2D engine + React adapter
An organic glow that hugs the edge of your screen.
The framework for building agents
Like Next.js for agents. Build durable agents with one folder. eve is a filesystem-first framework for durable AI agents. Core agent capabilities live in conventional locations, so projects are easier to inspect, extend, and operate.
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A lightweight Node.js private proxy registry.
Verdaccio is a simple, zero-config-required local private npm registry. No need for an entire database just to get started! Verdaccio comes out of the box with its own tiny database, and the ability to proxy other registries (eg. npmjs.org), caching the downloaded modules along the way. For those looking to extend their storage capabilities, Verdaccio supports various community-made plugins to hook into services such as Amazon's s3, Google Cloud Storage or create your own plugin.
Find and fix problems in your JavaScript code. Pluggable JavaScript Linter.
ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions:
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Knex.js is a batteries-included SQL query builder for JavaScript.
Knex.js (pronounced /kəˈnɛks/) is a "batteries included" SQL query builder for PostgreSQL, CockroachDB, MSSQL, MySQL, MariaDB, SQLite3, Better-SQLite3, Oracle, and Amazon Redshift designed to be flexible, portable, and fun to use.
@pierre/diffs is an open source diff and code rendering library. It's built on Shiki for syntax highlighting and theming, is super customizable, and comes packed with features. Made with love by The Pierre Computer Company.
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The all-in-one JavaScript toolkit that augments Node.js instead of trying to replace it.
A TypeScript-first toolchain for Node.js. Run TypeScript files, package.json scripts, and local CLIs on the node and package manager you already have. No new runtime, no lock-in.
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Scan. Understand. Fix. Free, local-first JS/TS vulnerability scanner.
Fast, developer-friendly JS/TS dependency vulnerability scanner with local lockfile scanning, OSV matching, direct vs transitive visibility, --fix, JSON output, and practical remediation guidance.
Most security tools are built around pipelines, not developers. CVE Lite CLI scans your lockfile locally in seconds, explains the dependency path, and tells you what to update before you push.
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A library that unifies the APIs of IndexedDB, localStorage and other storage into a consistent API.
modern storage toolkit that keeps localForage compatibility while using async/await, TypeScript, and zero legacy baggage.
An ESLint plugin to disable mutation and promote functional programming in JavaScript and TypeScript.
TypeScript Frontend Framework Built on Effect-TS. Built on Effect. Architected like Elm. Written in TypeScript.
Foldkit is for developers who want to build their product with confidence instead of fighting their architecture. If you want a single pattern that scales from a counter to a multiplayer game without complexity creep, this is it.
The web has been silent. tiks makes it sing.
Procedural UI sounds. Zero audio files. Pure synthesis.
TypeScript → Native. One Codebase. Every Platform. Native Performance.
Perry compiles TypeScript to native GUI and CLI apps on macOS, iPadOS, iOS, Android, Linux, Windows, watchOS, tvOS, WebAssembly, and the Web. No runtime. No Electron. Just native binaries.
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A TypeScript/JavaScript library for quickly building performant declarative user interfaces without the use of a virtual DOM.
Reactive UIs in plain TypeScript. Simple to learn, fast to ship.
Aberdeen wraps your state in ES6 Proxy objects for fine-grained property access tracking, then automatically re-executes only the DOM-building closures that depend on changed data. So we get precise DOM updates with neither virtual DOM diffing nor compiler magic.
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Orchestrate sandboxed coding agents in TypeScript with sandcastle.run().
A TypeScript library for orchestrating AI coding agents in isolated sandboxes.
Zero-dependency spreadsheet engine — XLSX, CSV, ODS, JSON, NDJSON, XML.
Schema validation, streaming, round-trip preservation. Pure TypeScript, works everywhere.
Build apps that live inside AI app. the full-stack React framework for MCP apps and MCP servers.
Skybridge is a full-stack TypeScript framework for MCP Apps and ChatGPT Apps. Type-safe. React-powered. Platform-agnostic.
🍫 Tastier cookies, local, session, and db storage in a tiny package. Includes subscribe() events for changes.
OpenAPI to TypeScript Magic. Generate type-safe API clients from OpenAPI.
Transform your OpenAPI specs into type-safe clients, mocks, and validators. Stop writing boilerplate. Start shipping features.
Modular and type-safe forms
Build your next form with Formisch, the open source form library with performance, type safety and bundle size in mind. The lightweight, schema-first, and fully type-safe form library for React, Solid, Vue, Svelte and more.
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Infrastructure as TypeScript
Deploy to Cloudflare, AWS, and more with pure TypeScript. Generate support for any API in minutes with AI.
Alchemy is an embeddable, TypeScript-native Infrastructure-as-Code (IaC) library for modeling Resources that are Created, Updated and Deleted automatically.
Like Protobuf, without the pain. The single source of truth for your data types.
Skir is a declarative language for defining data types, constants, and APIs. Write your schema once in a .skir file and generate idiomatic, type-safe code in TypeScript, Python, Java, Go, C++, and more.
The library for faithful browser automation. High-fidelity fingerprinting for Bun, engineered for consistency and transparency.
mochi.js is a Bun-native, raw-CDP browser automation framework. Pass a seed and a profile; get a relationally-coherent fingerprint that survives a getParameter(0x9245) probe. JIT-friendly inject payload, Chromium-native fetch (real Chrome JA4 by definition), behavioral synth on top of Bezier+Fitts. Leaves no crumbs.
The Agent Harness Framework. The sandbox agent framework.
Not another SDK. Build powerful, autonomous agents with Flue's programmable TypeScript harness. Write once, deploy anywhere.
Flue is a TypeScript framework for building the next generation of agents, designed around a built-in agent harness. It's like Claude Code, but 100% headless and programmable. There's no baked-in assumption like requiring a human operator to function. No TUI. No GUI. Just TypeScript.
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Markup for generating rich type information in your documentations ahead of time.
A markup format for TypeScript code, ideal for creating self-contained code samples which let the TypeScript compiler do the extra leg-work. Inspired by the fourslash test system.
A TypeScript framework for building MCP servers capable of handling client sessions.
Lightweight fuzzy-search library, with zero dependencies.
Fuse.js is a lightweight, zero-dependency fuzzy-search library written in TypeScript. It works in the browser and on the server, and is designed for searching small-to-medium datasets on the client side where you can't rely on a dedicated search backend.