I'm not that good at succulent I.d., but if those are closed glass containers, get them out of those into something with a drain hole.

...just to add, give them also much more light. They are very etiolated. 1st could be Echeveria Perle von Nurnberg, 2nd looks like Anacampseros (corrected after Liz posed proper ID - not Adromischus cooperi) and not sure what to suggest for 3rd. But get them better growing conditions first so they get into better shape, and post again to ID correctly.

The second looks more like an Anacampseros to me, but, like Rina says, once they grow in better conditions for a bit it'll be easier to ID correctly.

Liz

That is what I was thinking about...but got the names confused! The 'hair' in-between the leaves indicates Anacampseros. Thank you for correcting me - I have changed ID in my previous post.