APBS is an acronym that stands for Adaptive Poisson-Boltzmann Solver, which is a tool used in computational chemistry. Synonyms for APBS include computational electrophysiology, molecular modeling, and molecular dynamics simulation. Other related terms include quantum mechanics, molecular mechanics, and molecular modeling software. These tools are used in the prediction of molecular behavior, including protein-ligand binding and protein-protein interactions. The use of these tools has led to significant progress in understanding protein structure and function and has been useful in drug discovery. While there are many different tools available, all of these techniques use sophisticated algorithms to simulate molecular interactions and mimic what happens in the real world.