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CSS and HTML Tools

skellyCSS — A lightweight CSS framework to quickly implement "skeletons"  (i.e. grey loading boxes) into your projects.

tailwind-to-inline — An npm package that enables you to automatically convert Tailwind classes to inline styles, for use in HTML email layouts.

SuperHTML — For Zig-based projects, an HTML language server and templating language library, that offers syntax checking and autoformatting features for HTML files.

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Tailwind Prefix Applicator — Enter some HTML with regular Tailwind classes, and this tool will automatically add your own custom prefix to the classes.

ShadeStudio — An online tool to generate and save color palettes that can be exported as CSS variables, Tailwind, or SVG.

Imagehover.css — A lightweight CSS library (~19kb) allowing you to easily implement scalable image hover effects, with over 40 hover effect classes to choose from.

style-observer —  A library that plugs a gap in MutationObserver (which tracks DOM changes) and allows you to set up an observer that notifies you when the computed value of a tracked CSS property has changed.

Tailwind Grid Generator — An online tool that helps developers create custom Tailwind-based grid layouts, with settings to define the number of columns, rows, the gutter size, and element sizes.

LDRS — A set of 40+ open-source loaders and spinners, built with HTML, CSS and SVG, and powered by web components for maximum compatibility. Each spinner can be customized for size, speed, stroke, color, etc.

Build Tools, Bundlers, etc.

dotenx — Described as a "better" dotenv, which is a zero-dependency module that loads environment variables from a .env file into process.env.

Hot Hook — A simple and lightweight library for adding hot module replacement in Node.js with ES Modules.

babel-plugin-transform-regex — A Babel plugin for the regex package, which is a template tag that extends JavaScript regular expressions, allowing you to transpile tagged regex templates into native RegExp literals.

e18e — Not a tool but a community initiative to provide a space for contributions, ideas, and knowledge sharing around the importance of performance across the JavaScript ecosystem.

nrr — Minimal, blazing fast npm scripts runner written in Rust that initializes and resolves scripts faster than other package managers and script runners.

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ESLint Config Inspector — A visual tool for inspecting and understanding your ESLint flat config files (which replaced the deprecated eslintrc format).

Sherif — An opinionated, zero-config linter built with Rust for JavaScript monorepos that runs fast in any monorepo and enforces rules to provide a better, standardized developer experience.

@vite-pwa/remix — A feature-rich, zero-config, framework-agnostic, extensible Vite-powered PWA plugin for Remix projects.

garn — A build tool and environment manager that replaces justfiles/makefiles, Docker, and the annoying parts of READMEs.

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JavaScript Utilities

Balloons-js — A simple JavaScript utility that adds colorful animated rising balloons to any web page using a simple function call.

UAParser.js — A comprehensive, compact, and up-to-date isomorphic JavaScript library to detecting a user's browser, engine, OS, CPU, and device type/model, and runs in the browser or Node.js.

fetch-in-chunks — A utility for fetching large files in chunks with support for parallel downloads, progress tracking, and request abortion.

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color-bits — A high-performance color library that represents RGBA colors as a single int32 number and avoids allocating memory as much as possible while parsing, handling, and formatting colors, for efficient CPU use.

Maskito — A collection of utilities to create an input mask that ensures the user types a given value according to a predefined format.

Oops.js — A utility to implement undo/redo capabilities for your apps, on par with similar functionality in industry-leading software like Figma, Photoshop, and Visual Studio Code.

OctoPalm.js — A lightweight JavaScript library designed to add real-time, customizable search functionality to your web apps, with animated results and custom-styled scrollbars.

littlezipper — A small, fast .zip library that uses the native CompressionStream API, which now has baseline support, for use in the browser or Node.js.

river.ts — A powerful library for handling server-sent events (SSE) in TypeScript, that allows you to build a common interface for events, then use it consistently on both server and client.

Commercial Apps & Classifieds