Wikipedia
EWater
eWater is a non-profit organisation established by Australian Federal and State Governments. The role of eWater is to support integrated water resources management in Australia through development and implementation of the national hydrological modelling strategy (NHMS).
eWater develops and supports a number of software tools for hydrological modelling. Some tools include Source, MUSIC, Rainfall Runoff Library, Stochastic Climate Library and SedNet.