Flash is by macromedia, it's similar to HTML as in you can write sites with it. Check out Fantasy Card to see how good Flash can be... Something very similar to flash is shockwave, also known as Shockwave Flash. Many sites such as zoogdisney.com have shockwave games. I am writing a full debunkment of this story and was writing one saturday but my internet explorer decided to crash... Tip, always write it in NotePad first.
In the poll, if you choose other, E-mail me the name cause i like to try them all.