Is there an app that can add a cartoon dialog bubble?

I googled it and there seems to be some apps that turn the whole image into a cartoon. Apparently you can do it with photo shop, which I don't own but I couldn't find anything else. I skimmed gimp but didn't notice it being mentioned in its feature list. Thank You!

Gimp is pretty much the same as PS. If you googled gimp then you would of found loads of tutorials.

gimp speech bubble

http://www.google.co.uk/search?hl=en&client=firefox-a&hs=hmt&rls=org.mozilla%3Aen-US%3Aofficial&q=gimp+speech+bubble&aq=f&aqi=g3&aql=&oq=&gs_rfai=

Gimp is pretty much the same as PS. If you googled gimp then you would of found loads of tutorials.

gimp speech bubble

http://www.google.co.uk/search?hl=en&client=firefox-a&hs=hmt&rls=org.mozilla%3Aen-US%3Aofficial&q=gimp+speech+bubble&aq=f&aqi=g3&aql=&oq=&gs_rfai=

Thank you much!