Chrome/Firefox: Kido'z TV creates a gated version of YouTube, allowing your kids to access thousands of moderator-approved videos sorted into twelve channels. Kids can save favourite videos to a playlist and there is a channel where you can add YouTube videos for your child that have not yet made it through the approval process.
YouTube videos are wonderful to entertain your kids when they're old enough to use a mouse, but if you're not supervising them closely it is easy for them to follow video suggestions that lead to inappropriate content for their age. Kido'z TV is a safer alternative that lets your children explore movie and cartoon clips, funny videos, bedtime stories, animal footage, and other channels of content.
If you don't want your child watching one of the channels, you can easily block that channel in parental settings. This extension is based on the Kido'z browser, which we've previously found to be customisable and kid-friendly.
My gripe with the extension is that the only option to block content is to block an entire channel. My wife and I feel that Tom & Jerry is a little too violent for our son, but blocking the entire Classic Cartoons channel also means my son can't watch Mickey Mouse or the Muppets. Kido'z should consider adding subcategories for this purpose. Otherwise, it's gold.
Kido'z TV is a free browser extension for Chrome and Firefox. The basic service is free, and an enhanced Plus version is $US4.99/month which adds extra security features such as usage limits, required passwords to exit Kido'Z, and parent statistics. There is also an Android app to access Kido'z TV, but since it is incompatible with my LG Optimus V, I can't offer an opinion.