Ruffle - An open source Flash player
Flash Player 2021 - Want to fix "This plugin is not supported" and "Adobe Flash Player is blocked" error messages? This extension will remove those messages and allow you to play Flash in any website with a single click.
BlueMaxima's Flashpoint - the webgame preservation project.
CheerpX for Flash - its adobe flash player in webassembly
Lightspark - The Lightspark project
SWF File Player - SWF File Player is a free player for SWF (Shockwave Flash) files.