I'm always looking out for new tools and environments for teaching young people to program. Recently I found a list created by someone else. The list is here and it has a few I haven't read of before. It also has some short one line to one paragraph reviews of many of these tools. There is a lot there and I am still going through it.
If you find other first programming languages or tools I am always looking to learn what others are using and doing. And if you are interested in this topic I use the tag first programming experience to mark the blog posts I write on the subject. You can use that link to find a summary of the more recent posts I have made on that topic. There is a complete tag cloud that you can use to search my blog on the blog web page BTW.