Answer :
I assume you are asking about the software Flash. Jonathan G. started the software that was known as FutureSplash Animator and was later called Macromedia Flash 1.0 after it was bought by Macromedia.
Jonathan Gay
Jonathan Gay is an American computer programmer and software entrepreneur based in Northern California. Gay co-founded FutureWave Software in 1993. For a decade, he was the main programmer and visionary of Flash, an animation editor for web pages.