GCompris - Educational Game for Children 2 to 10 years old.
Cool Math Endless Run - Cool Math Endless Run is a monster math game and an endless run adventure.
Etoys - Etoys is an educational tool for teaching children powerful ideas in compelling ways.
MathIsFun Times Table - Learn Your Multiplication Tables
Tux Paint - Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, preschool and K-6).
Bounty Matics - Math can be fun and Bounty Matics proves it - you play as a bounty hunter that must win duels.