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Top 23 JavaScript TypeScript Projects
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Material UI
Ready-to-use foundational React components, free forever. It includes Material UI, which implements Google's Material Design.
Project mention: Show HN: Typique – a bundler-independent, zero-runtime CSS-in-TS library | news.ycombinator.com | 2026-01-07Hi HN! I’ve been following zero-runtime CSS-in-JS/TS libraries for a while and noticed that most of them end up overwhelmed by bundler compatibility issues. A good summary of these problems is in the final status report [1] of Pigment CSS — MUI’s attempt in this space.
As someone working on TypeScript tooling, I started wondering whether this problem could be approached from a different angle: instead of relying on bundler plugins, use TypeScript types to define styles, and TypeScript tooling to provide locally scoped class and CSS variable names.
This led to Typique — a library built as a TypeScript plugin. It provides IDE integration (completion, diagnostics, quick fixes) and emits plain CSS without any dependence on bundler or framework. It’s early, but already usable; I’ve been using it in a couple of personal projects.
Feedback, questions, and skepticism are very welcome. Thanks for reading.
[1] https://github.com/mui/material-ui/issues/45759#issuecomment...
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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Project mention: Clean code didn't get less important in the AI age — it got more important | dev.to | 2026-09-13
For static analysis there's PHPStan for PHP and mypy for Python. For formatting, Prettier and gofmt are the cheapest guardrail there is, with zero excuse not to run one. For security, Semgrep covers the same principle at higher stakes.
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30-Days-Of-JavaScript
30 days of JavaScript programming challenge is a step-by-step guide to learn JavaScript programming language in 30 days. This challenge may take more than 100 days, please just follow your own pace. These videos may help too: https://www.youtube.com/channel/UC7PNRuno1rzYPb1xLa4yktw
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The editor is Monaco, the component behind VS Code, so it already knows how to highlight tokens, show a completion list and put a marker on a line. What it knows nothing about is SpEL, or your data.
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claude-hud
A Claude Code plugin that shows what's happening - context usage, active tools, running agents, and todo progress
Project mention: Maximizing the value of your Claude Code sessions | news.ycombinator.com | 2026-08-14it's easy to create one, or use something like https://github.com/jarrodwatts/claude-hud
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Capacitor does not ship this rule in its consumer rules yet. Issue #8589 describes the same behavior with the same workaround and is open as of this writing. Capacitor 8.5.2 merged a null check in getPermissionStates(), so on 8.5.2 the app no longer crashes. Instead, checkPermissions() returns an empty permission map. You still need the keep rule on 8.5.2, because the null check only hides the symptom.
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SaaSHub
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Repository and benchmarks: https://github.com/alam00000/bentopdf-hyper-compress
Kura is a PDF standards, conversion and preflight engine.
It supports:
- All 11 PDF/A conformance levels: PDF/A-1a, PDF/A-1b, PDF/A-2a, PDF/A-2b, PDF/A-2u, PDF/A-3a, PDF/A-3b, PDF/A-3u, PDF/A-4, PDF/A-4e and PDF/A-4f
- Accessibility: PDF/UA-1 and PDF/UA-2
- Print production: PDF/X-1a, PDF/X-3, PDF/X-4, PDF/X-4p, PDF/X-5g, PDF/X-5n and PDF/X-5pg
- Engineering and variable data printing: PDF/E-1 and PDF/VT
- E-invoices: Factur-X, ZUGFeRD, XRechnung and Order-X
- 396 bundled print-preflight profiles
It has been tested against several standards suites, including the veraPDF corpus, Isartor, BFO, Ghent Output Suite 5.0, the PDF/UA Reference Suite and Cal Poly's PDF/VT suite.
Across 30,677 PDF conversions it had zero crashes and zero timeouts, with a 0.05 second median conversion time.
Like Hyper, it ships as a CLI, C library, npm package, Docker image and WebAssembly build.
Live Website: https://kura.bentopdf.com/
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Project mention: Show HN: Free WhatsApp MCP (+UI) – Give Your AI Agents Access to WhatsApp | news.ycombinator.com | 2026-09-16
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protobuf
High-performance Protocol Buffers for JavaScript and TypeScript. Conformant through Edition 2026, and unusually versatile. No protoc required.
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h5-Dooring
H5 Page Maker, H5 Editor, LowCode. Make H5 as easy as building blocks. | 让H5制作像搭积木一样简单, 轻松搭建H5页面, H5网站, PC端网站,LowCode平台.
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TestCafe
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Project mention: Build apps for ChatGPT, Claude, and Gemini using MCP UI components from Flowbite | dev.to | 2026-02-06
We decided to use the Skybridge framework to build MCP apps and we are using the UI components from Flowbite.
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GoJS, a JavaScript Library for HTML Diagrams
JavaScript diagramming library for interactive flowcharts, org charts, design tools, planning tools, visual languages.
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jsplumb
Build Connectivity Quickly. Rapidly build diagramming apps and rich graphical front ends with React, Angular, Svelte, Vue, Javascript and Typescript.
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dependency-cruiser
Validate and visualize dependencies. Your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.
dependency-cruiser: validate and visualise dependencies. https://github.com/sverweij/dependency-cruiser
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript TypeScript discussion
JavaScript TypeScript related posts
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Do not install Zod 4.6.6 – might be infected
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Buy This, Not That, Drop This There” - I Made It Make Sense
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Building PlantLens AI for the Hacktoberfest "Touch Grass" Challenge
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Show HN: Free WhatsApp MCP (+UI) – Give Your AI Agents Access to WhatsApp
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Λ Snap – An inviting programming language for kids and adults for CS study
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Bun 1.4 Rust rewrite is not looking good
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Para-Scope alternatives - homepage, uptime-kuma, n8n, and Huginn
5 projects | 17 Aug 2026 -
A note from our sponsor - SaaSHub
www.saashub.com | 14 Oct 2026
Index
What are some of the best open-source TypeScript projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Material UI | 99,165 |
| 2 | prettier | 52,413 |
| 3 | 30-Days-Of-JavaScript | 46,903 |
| 4 | Monaco Editor | 46,857 |
| 5 | claude-hud | 28,434 |
| 6 | engine | 16,996 |
| 7 | capacitor | 16,812 |
| 8 | bentopdf | 15,912 |
| 9 | pipedream | 11,726 |
| 10 | Baileys | 11,302 |
| 11 | razzle | 11,021 |
| 12 | protobuf | 10,601 |
| 13 | angular-webpack-starter | 10,208 |
| 14 | h5-Dooring | 10,000 |
| 15 | TestCafe | 9,897 |
| 16 | flowbite | 9,368 |
| 17 | GoJS, a JavaScript Library for HTML Diagrams | 8,489 |
| 18 | jsplumb | 7,766 |
| 19 | dependency-cruiser | 7,270 |
| 20 | cash | 7,035 |
| 21 | golden-layout | 6,720 |
| 22 | melonJS | 6,409 |
| 23 | just | 6,204 |
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