While I cannot provide as many photos like the previous posts have, I can meanwhile give a list:
American crocodile: Chapultepec Zoo, Parque del Este
Dwarf Crocodile: Whipsnade Zoo, Bioparc Valencia, Sea Life London
Nile Crocodile: Lisbon Zoo, Bioparc Valencia (pictured here), Faunia Madrid, Noah's Ark Zoo Farm

Orinoco Crocodile: Parque Del Este
Philippine Corocidle: Singapore Zoo, Bergen Aquarium, London Zoo
Siamese Crocodile: Singapore Zoo
Slender Snouted Crocodile: Oceanografic Valencia (Pictured here)

American Alligator: Pairi Daiza, Lisbon Zoo, Rio Safari Elche
Broad Snouted Caiman: Bergen Aquarium
Chinese Alligator: Pairi Daiza, Singapore Zoo
Cuvier's Dwarf Caiman: Chapultepec Zoo, Bergen Aquarium
Smooth Fronted Caiman: Bergen Aquarium
Spectacled Caiman: Bergen Aquairum, Pairi Daiza, Parque Del Este, Faunia Madrid
False Gharial: Singapore Zoo
Gharial: Singapore Zoo, Pairi Daiza
Totalling to 15/26 of the recognised species. Also was surprised to see how the relatively quaint collection that is Bergen Aquarium had no less than 5 of the 15 species on my list, including relative rarities like broad snouted caiman, smooth fronted caiman and philippine crocodiles.