As of early 2026, it supports nearly 99% of ActionScript 1.0/2.0 language features and continues to improve ActionScript 3.0 support.
It functions as both a standalone player and a browser plugin. swf player github
Lightspark is an LGPLv3 licensed Flash player and browser plugin. It was designed to be a high-performance alternative to the official Adobe player, focusing primarily on the newer ActionScript 3.0 (AVM2) standard. As of early 2026, it supports nearly 99% of ActionScript 1
Replaces the defunct Flash plugin in Chrome, Firefox, and Edge. As of early 2026
Available as a browser extension (Chrome, Firefox, Edge), a standalone desktop app, or a simple script tag for website owners to "polyfill" legacy content.
