WB Kids lets you watch old cartoons online for free. Because the site is free, the choice of shows is much more limited. Just four cartoon series are available. They are Tom and Jerry, Scooby-Doo, Looney Tunes, and The Flintstones. The series on offer do sometimes change. In the past, The Jetsons, ThunderCats, and The Smurfs have been available to watch.
The site also includes cartoon-themed games, comics, and downloads.