Have a look at this wonderfull range of free software, why not visit the author's page here.

Seterra
Very popular free geography software for home or classroom use. Learn about countries, states, flags, cities and capitals all over the world! Multilingual.

Sebran's ABC
Helps your children learn letters, numbers, simple math, and reading. Multilingual, freeware.

Minisebran
Fun and creative exercises for toddlers. Multilingual, freeware.

Selingua
A language vocabulary tutor. Extend your German, Spanish, French and Swedish vocab! Freeware! Perfect for ESL students as well.

Selingua Columns
Play a Tetris-style game and learn German, Spanish, French and Swedish! Freeware!

Sephonics
Learn the English phonetic alphabet (IPA). Freeware!

Poetry Screen Saver
Displays English poetry on your screen. Freeware!

Semanda.com
A website for teaching kids and grown-ups basic Chinese characters .