This is a complete phonics program with lesson book, over 50 progressive readers, teaching songs, and other activities. There are no samples available, so it's hard to tell how advanced it gets. Looks like a pretty comprehensive program at a fairly reasonable price.
Online, interactive program for learning music reading and theory.
This non-profit organization offers over 100 free self-paced, online, college level courses.
This online math program is designed to help students with math problems (including dyscalculia.)
This hands-on grammar curriculum includes CD ROMs, teacher manuals, and games for learning gramma
Online, super-hero themed science games for elementary and middle school levels.
This program includes videos, worksheets and quizzes for history learning in jr.