Adobe.
HTML just requires a graphics card in your comp, and Flash games require adobe flash player to play them....... and there are some other differences
You can not save in flash format from Ps but you can import psd in Flash Professional
Photoshop has more fixed features and could be better for some users.One downside to Photoshop is the price, GIMP is free.GIMP "scripts" are more flexible and can use image parameters whereas Photoshop "Actions" use absolute values.Gimp can be run on far more machines (operating systems) than Photoshop.
That would be Adobe.
Flash is an adobe program just like Photoshop and Illustrator. It is the same on both mac's and pc's.
No, sorry. Photoshop deals with editing pictures. You can make animations too, but not anything interactive. Drarkis.
Flash
In Photoshop U can make only .gif animations.
At my high school, we used Photoshop.
Depend on what you are designing, Flash is better for animations, Photoshop for everything else.
No. Macromedia Flash 8.0 can't open and edit Photoshop files (that is, files with extension ".psd"). But it can import that kind of files. The result is a "flattened" bitmap object in the stage (File>Import>Import to Stage...) or in the library (File>Import>Import to Library...). However, in most cases is preferable convert the Photoshop file in a JPG image file before import it in Flash.