htmx

Unclaimed

High power tools for HTML, enabling modern UIs with simplicity and hypertext.

UI/UX Design IDE & Code Editors Browser DevTools

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TL;DR - htmx

Extends HTML with AJAX, WebSockets, and CSS Transitions via attributes.
Enables dynamic UIs with less JavaScript and smaller codebases.
Lightweight, dependency-free, and open-source library.

Pricing: Free forever

Best for: Individuals & startups

Pros & Cons

Pros

Simplifies interactivity
No JavaScript needed
Lightweight
Progressive enhancement
Good documentation

Cons

Different paradigm
Not for SPAs
Server requirements
Debugging different
Smaller ecosystem

Key Features

HTML extensionsAJAX requestsCSS transitionsWebSocket supportNo JavaScript requiredServer-driven

Pricing Plans

Free

Full library access
AJAX from HTML
No build step
14kb minified
BSD-2-Clause license
Open source

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About htmx

By Toolradar Team·Updated Feb 23, 2026

htmx is a lightweight, dependency-free JavaScript library that allows developers to access AJAX, CSS Transitions, WebSockets, and Server Sent Events directly within HTML using attributes. It extends HTML's capabilities beyond traditional <a> and <form> elements, enabling any element to trigger HTTP requests and update parts of the page without full reloads. This tool is designed for developers who want to build modern, dynamic user interfaces with the simplicity and power of hypertext, reducing the need for extensive JavaScript frameworks. It aims to complete HTML as a hypertext, offering a more efficient way to create interactive web applications and has been shown to significantly reduce codebase sizes compared to alternatives like React. htmx 2.x drops IE support, while 1.x remains available for legacy projects.

How we evaluate tools →Source: htmx.org