Microsoft Popfly was a program that allowed kids and grown-ups to make their own computer games or websites without knowing a lot about computer coding. It was like having a big box of LEGO pieces that you could use to build whatever you could imagine.
Imagine you wanted to make a video game where a cat has to jump over obstacles to get to the end of a level. With Popfly, you would start by creating different elements of your game like the cat, the obstacles, and the background. Then you would put all the pieces together to make your game, just like how you would build a LEGO creation.
You could also use Popfly to make your own website by choosing different templates and layouts. You could customize the colors, add pictures and text, and even make your website interactive with games or quizzes.
So even if you didn't know how to write computer code, Popfly could help you create cool things on the computer like games and websites. Unfortunately, Popfly is no longer available, but there are other programs out there that do similar things.