What is the best children's educational software?

Educational software is a term used for any computer software which is made for an educational purpose.

• GCompris is a high quality educational software suite. It is free and available for Windows, GNU/Linux, and Mac OS.

It has a lot of learning activities for children such as computer discovery (keyboard, mouse, touchscreen), reading (letters, words, reading practice, typing text), arithmetic (numbers, operations, table memory, enumeration, double entry table), science (the canal lock, the water cycle, renewable energy), geography (countries, regions, culture), games (chess, memory, align 4, hangman, tic-tac-toe), etc.

• Omnitux aims to provide various educational activities around multimedia elements (images, sounds, texts). It has many educational activities, such as counting, matching games, puzzles, etc.
  
• The KDE Education Project aims to provide free educational software for children, students, and teachers.

They have applications for Maths (Cantor, KAlgebra, KBruch -learning fractions-, Kig, KmPlot, Rocs), Language (Kanagram, KHangMan, Kiten, KLettres, KWordQuiz, Parley), Science (Kalzium, KStars, Marble, Step), Geography (KGeography), Blinken and Pairs (improve your memory), KTouch (a free typing tutor), KTurtle (learn the basis of programming with the cute turtle). etc.

• Others: Childsplay is a collection of educational activities for young children and runs on Windows, OSX, and Linux. Starfall.com is a free online service that helps children learn to read. WordWeb is a free dictionary program. Potato Guy or KTuberling is a potato editor for kids, so they can drag and drop eyes, mouths, moustache, and other parts of face and goodies onto a potato-like guy.