I have around 200 jpg images. I need to stack them so that i can convert them into a simple animated gif image. Are there any free tools available to do that job? My os is windows. I'm not so bothered about the quality of the output.
Try using ImageMagick's convert utility. I have used it to create animated gifs from a set of images (in any format) in the past.
Use the command
convert -delay 20 -loop 0 *.jpg animated.gif