Scratch - This software allows you to program 2D animations and games. It has many, many options and is great for beginner and intermediate programmers!

Alice - This downloadable software can be used to program 3D animations and games. It is a great next step after you have tried Scratch or another visual block programmer.

Code Academy - A wonderful tutorial site that will have you programming in no time at all!

JS fiddle - A site where you can test HTML, CSS, and Javascript.

Kompozer - Free software that allows you to build amazing websites using HTML.