Global Jet has A318 Elite LX-GJC available for charter.
Also, K5-Aviation has a couple of ACJs: OE-IGS and D-ALXX, Comlux has ACJs 9H-AVK, 9H-MCE and 320 Prestige 9H-AWK.
In the Middle East you have Al Jaber's A318 A6-AJC.
In Asia are ACJs from Beijing Capital Airlines B6435 (to be confirmed) and Reliance VT-IAH in Mumbai.
What else?