Ruffle - An open source Flash player
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
BlueMaxima's Flashpoint - the webgame preservation project.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
CheerpX for Flash - its adobe flash player in webassembly
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.