GCompris - Educational Game for Children 2 to 10 years old.
HugeQuiz - test your knowledge with a variety of quizzes about everything.
Tux Paint - Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, preschool and K-6).
The Quizopedia - The Quizopedia is a top-notch quiz-based application that provides the overall development of the interesting candidates by offering interesting quizzes focused on enhancing analytical, reasoning, and decision-making skills.
I Know It - "I Know It" is an online game for practicing primary-level math concepts.
AlltheTests - AlltheTests is an online platform for testing intelligence and command over current affairs, including Cartoons, Mangas, Books, Games, Satire, Knowledge, EQ tests, Social media, Sports, and celebrities’ related tests.