Unfortunately it doesn't seem to be available yet. Scallop and Lobster are both from UPenn, and the Scallop website says "We are still in the process of open sourcing Scallop," so I assume it's a matter of time.
you seem to be more in the know than me :) Please could you just sketch out a few bullets and explain the relationship between Scallop and Lobster and what you think is going on?
I read the paper on Lobster a little bit. Scallop does its reasoning on the CPU - whereas Lobster is an attempt to move that reasoning logic to the GPU. That way the entire neurosymbolic pipeline stays on the GPU and the whole thing runs much faster.