Chimpoo - Chimpoo is an Amazing, Massively multiplayer Online Role-playing and Browser-based video game developed and published by Games2Win.
Argus - Collections management for museums & galleries
Toontown Rewritten - Toontown Rewritten is a Free to Play, Browser-based, MMORPG, and Virtual-World video game developed and published by Disney.
Meow Playground - Imagine Club Penguin with cats!
Herotopia - Herotopia is a Massively Multiplayer Online, Role-playing, Virtual World and Browser-based video game developed by Herotainment and published by Jagex.
CPPS.io - CPPS.io is a clone of Club Penguin, you will have the same experience as if Club Penguin was still around, with free membership custom features and more, come join CPPS.io a great alternative to Club penguin.