Starfall
http://www.starfall.com/
PBS Kids
http://pbskids.org/
ABCYa
http://www.abcya.com/
Raz-Kids
https://www.kidsa-z.com/main/Login
Seesaw
https://app.seesaw.me/#/login
Spelling City
https://www.spellingcity.com/Log-yourself-in.html