data-star

A lightweight, hypermedia-driven framework that delivers real-time backend reactivity with a tiny 13KiB client footprint.

Datastar bridges the gap between static HTML and heavy SPA frameworks by using server-sent events (SSE) to sync state. It bypasses the complexity of virtual DOMs and massive bundles (averaging 1/10th the size of Alpine.js or HTMX) while providing fine-grained reactivity. Developers use simple data attributes like data-model and data-on to bind elements directly to any backend language (Go, Python, or PHP). This approach eliminates the need for a dedicated frontend build step, allowing for instant UI updates and high-performance interactions through a single, unified hypermedia stream.

https://data-star.dev