Verify3d:Structure Evaluation server is a tool designed to help in the refinement of crystallographic structures

ANOLEA:(Atomic Non-Local Environment Assessment) is a server that performs energy calculations on a protein chain, evaluating the “Non- Local Environment” (NLE) of each heavy atom in the molecule.

RAMPAGE: Ramachandran Plot Assessment

PSVS:The protein structure validation software suite (PSVS) is used for assessment of protein structures generated from NMR, X-ray crystallographic and homology modeling methods.

The Ramachandran Plot Server

Prosa: Protein structure analysis

PROCHECK