The Ramachandran two-dimensional steric map of torsion angles (φ,ψ) has been widely employed for protein structure determination, validation, model building, and for a great variety of applications and analyses, ever since it was proposed in 1963 by late G.N. Ramachandran and coworkers (Ramachandran et al., 1963; Ramakrishnan and Ramachandran, 1965; Ramachandran and Sasisekharan, 1968). The present web utility provides a very convenient way to plot all types of Ramachandran maps, 2D & 3D plots, six distinct categories of maps:, Gly, Val/Ile, pre-Pro, trans-Pro, cis-Pro & Ala (plus remaining 15 amino acids) (Chen et al., 2010). Furthermore, this utility may also be used to plot Ramachandran map for petidomimetics containing non-standard residues or even a scatter plot of any two angles.