1. Itsagoal.org - Although the game is still in need of further development and has few players but i rank it 1st, because that is the only game that i have ever played for more than 2yrs and i have no intention of leaving it soon. They have a friendly community that are ready to help you be the best manager.
Visit: www.itsagoal.org to play.
2.Hattrick - I rank them 2nd because they are the best online football manager, but because the game is not mobile friendly so to have a better experience you must play via destop or Tab. They have great features.
Visit: www.m.hattrick.org to play.
3. Managerleague - The game is a good time killer, fun and amazing. They are one of the best free football manager game.
I'll share more letter...
I'm an online gamer so i've played varieties of online games most of them are "online football manager". So with this post i'll be sharing the best games in that platform.