Twago and Tranferwise logos: "accidental" similarity (with another logo)

Have you seen the logos of Twago (www.twago.it) and Transferwise (www.transferwise.com)? Spot the difference! ;-) 



And... can you see any similarity with another (older) logo?


ADDENDUM
Thanks to a comment on Facebook, I found another similar logo (older than the Ubuntu one).






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