CLiq is an application provides users an easy to use graphical environment specifically tailored for Cone Penetration Test data (CPT and CPTU). The new software addresses advanced issues such as cyclic softening in clay-like soils and thin layer/layer transition zone detection. CLiq provides results and plots for each calculation step, starting with the basic CPT data interpretation through to final plots of factor of safety, liquefaction potential index and post-earthquake displacements, both vertical settlement and lateral displacements. CLiq provides consistent output results by applying the state-of-the-art NCEER method along with the calibrated procedures for post earthquake displacements. It also includes the latest assessment procedure which is applicable to all soil type combining a check for cyclic liquefaction (sands) and cyclic softening (clays).