Lightspark
Lightspark is an LGPLv3 licensed Flash player and browser plugin written in C++/C that runs on Linux and Windows.
An open source 
Adobe Flash Player implementation, designed from the ground up to be efficient on current and (hopefully) future hardware.
Lightspark is an LGPLv3 licensed Flash player and browser plugin written in C++/C that runs on Linux and Windows. It aims to support all of Adobe's Flash formats.
Adobe Flash Player implementation, designed from the ground up to be efficient on current and (hopefully) future hardware.Lightspark is an LGPLv3 licensed Flash player and browser plugin written in C++/C that runs on Linux and Windows. It aims to support all of Adobe's Flash formats.
extremely buggy and definitely not ready for the general use
While every file I tried did seem to load, none of them ran very well. Most ran at ridiculous speeds with objects popping in and out of existence. Nearly every file I ran ended with the program crashing. The closest it came to working was playing the intro to a file, fading to black when the start button was click, and then staying on that blank screen until I closed the program.