Stairways Software (http://www.stairways.com) has released Sight Words 1.0 on the Mac App Store. It costs US$9.99 and offers a way for children to learn the most common English words.
The program — which requires Mac OS X 10.6.6 — can handle multiple children (even an entire class), and tracks each child’s progress showing which words that child has mastered and, more frequently, prompting them with words that have not yet been committed to memory. Almost 2,000 words are included, including those in the Dolch Word List.
All are internally ordered from easiest to hardest, so that the easier words are offered early. You can also generate a report of the child’s current status, showing words they know, words they are still working on, and words that they haven’t yet tried.