CRITERIA-3D is a three-dimensional water balance for small catchments.

CRITERIA 1D is a one-dimensional agro-hydrological model. It includes soil water fluxes, crop development and crop water needs, a GIS interface (CRITERIA GEO) for geographical simulations and tools to manage crop and soil parameters. The software is written in C++ using Qt libraries, so cross-platform building is possible (Windows, Linux, MacOS)

Visualize how the water balance is changing across the world from 2000 to present

R native implementation of the Dynamic Water Balance hydrologic model in a monthly time step

Agrolib are a set of libraries for agrometeorological modeling and climate analysis. They include a numerical solution for three-dimensional water and heat flow in the soil, water balance, meteorological data interpolation, daily weather generator, radiation budget, snow accumulation and melt, plant development and plant water uptake.

Utilities for water balances and mapping of results from the Hydrological Simulation Program-FORTRAN (HSPF)

The Oceland Model is a conceptual box model based on water balance equations and including basic moisture exchange processes in a coupled land-ocean-atmosphere system.