Aloe ferox or marlothii. Couldnt tell those 2 apart , aside from flowers. Both are somewhat common in wholesale.

Can you offer some suggestions as to care - do they like direct sunlight?

Can they be put outside in the summer etc.

Oh yes, they grow best in full sun, but will accept partial shade. Acclimate them to full sun, and they would benefit from being outside in the summer. If you're in an area with summer rainfall, so much the better. Watering 3-4x a month in the hottest months, when they're a little less active (than in the shoulder months between summer and winter) should be adequate. I'd guess A. marlothii.

A great aloe, in flower and out, but especially in flower and ...8' or so tall.

https://en.wikipedia.org/wiki/Aloe_marlothii