I found this very good program that I will be using next year for some of my children. It is called Language Tune-Up Kit. It follows along the same path as the Barton System and also covers sight words, spelling etc.
Some of my children are using:
Update: Lexia, I believe has an older child version that is for Grade 4 and up. I have not used this one partcularly. But most often a child with severe struggles in reading because of Dyslexia will need to start a little earlier to gain some key components before advancing in the program and may find it a bit toddler-ish if they have to do so.
Let me know what you use and how you like it!