Issue #686  (JS Libs, Testing Tools, Uncats)09/10/26

 

JavaScript Libraries & Frameworks

Fig — A small TypeScript UI runtime for building apps and metaframeworks, inspired by React (components, Fiber, hydration, state, etc.), but changes some things to better match platform semantics.

Vento — A new JavaScript-based template engine, inspired by other engines (Nunjucks, Mustache, etc.) that has a native JS API, strong performance, and is async-friendly, among other features.

A Data Grid That Analyzes — A zero-dependency JavaScript data grid that also builds dashboards, runs statistics and draws charts: a million rows, derived grids from one filter, process capability, 200+ live demos. Licensed per domain, not per seat.    SPONSORED 

BotKit — A TypeScript framework for building bots for ActivityPub (the decentralized social networking protocol), served by your app, on your domain, backed by your storage, your queue, and your code.

Hyperspan — A modern server-oriented TypeScript framework for building sites and apps, positioned somewhere between a more traditional server-side framework like Express and a newer frontend framework like Next.js.

pracht — A Preact framework with explicit routing, per-route render modes, and thin adapters for Cloudflare, Netlify, Vercel, and Node.js.

Babylon Lite — From the makers of Babylon.js, a WebGPU-exclusive, tree-shakable, data-oriented renderer, engineered for a small bundle size and high performance, while producing output that's identical to Babylon.js.

Agent-Native — A TypeScript framework for building agents that pair autonomous work with a purpose-built UI, enabling you to define each capability once as an action; the agent uses it as a tool, and the UI calls it from code.

Ant — A lightweight, high-performance JavaScript runtime built from scratch that runs real npm packages, starts instantly, and ships as a portable 9 MB binary.
 

Testing & Debugging Tools

OpenCodeReview — An AI-powered code review CLI tool that reads Git diffs, sends changed files to a configurable LLM via an agent with tool-use capabilities, and generates structured review comments with line-level precision.

serve-sim — The `npx serve` of Apple Simulators, enabling you to host your simulator for use with agent tools like Codex, Cursor, or Claude Desktop, locally, over your LAN, or host on a remote Mac and tunnel anywhere.

Framework Benchmarks — A reference site comparing performance for every popular front-end framework, displaying results for the same app, built in every framework, and then benchmarked.

The One Options Trade I Make Every Week — A single 0-day options trade, handed to you with the strike, the entry price, and the exit already mapped. Grab this week's free report to see how it works before the next signal drops.    SPONSORED 

TanStack NPM Stats — A web tool that lets you display a visual comparison of multiple npm packages, with the ability to export the chart or embed in your own site or app.

Can I Scrape This Site? — A simple web tool that lets you paste in a URL and it will report back if the site is crawlable and it will return a 'scaping difficulty' score.

code-inspector — A debugging tool that lets you click an element on the page and it will automatically open your code editor with the cursor positioned in the source code of the element, with support for React, Vue, Preact, Svelte, Astro, and more.

WCAG-EM Report Tool — A tool for experienced accessibility evaluators that turns your accessibility evaluation findings into a report based on WCAG Evaluation Methodology.

Playwriter — A Chrome extension and CLI that let your agents control your actual browser with logins, extensions, and cookies already there, with no headless instance, no bot detection, and no extra memory.

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The Uncategorizables

celld — An open source daemon that runs Cloudflare Workers and Durable Objects on your own machines, where each object is a cell: a named server with its own SQLite database.

FindHost — An online tool to search and filter out web hosting options based on software, hosting type, regions, and entry price, with support for 200+ active records.

Nango — An open-source platform for building product integrations, with support for 900+ APIs and works with any backend language, AI coding tool, and agent SDK.

TLDR AI — Keep up with AI in 5 minutes. Get the most interesting AI stories and breakthroughs delivered in a free daily email.   SPONSORED 

delphitools — A collection of small tools with no logins, no registration, no data collection, everything runs locally in your browser, featuring color tools, images, audio/video, text, PDF, and more.

Nimbalyst — A visual workspace for Codex and Claude Code, allowing you to work on everything in one place: sessions, tasks, docs, diagrams, mockups, commits, and code.

JargonPop — A Chrome extension that creates a dashboard of programming jargon found in any YouTube tech tutorials you watch, so you can review the terms later, for learning.

Type.lol — A living directory of independent type foundries that enables you to discover and collect typefaces from around the world and follow foundries and designers whose work you admire.

Commercial Apps & Classifieds