ELDAmwl is a Python software for retrieving vertical profiles of optical aerosol properties at multiple wavelengths from lidar measurements. It is one module of the Single Calculus Chain (SCC) [D'Amico et. al. (2015)] . ELDAmwl reads pre-processed lidar signals [D'Amico et. al. (2016)], derives particle backscatter and extinction coefficients, volume and particle linear depolarization ratios, lidar ratios and Angström exponents. It is an enhancement of the EARLINET Lidar Data Analyzer ELDA [Mattis et al. (2016)] which makes synergistic use of the multiwavelength information of the lidar data.