Ramms:: avalanche model is used to simulate avalanche in complex terrain. The model has been widely used in avalanche hazard studies in Switzerland. The ramms:: avalanche model combines state-of-the-art digital solutions with helpful input features and friendly visualization tools. Many of the input and output features are optimized, enabling users to easily modify dangerous scenarios and control simulation results. The core of the program is an effective second-order numerical solution, that is, the depth averaged avalanche dynamic equation. In the 3D digital terrain model, the velocity and velocity of avalanche are calculated. Using the GIS type drawing feature, you can easily specify a single or multiple publishing areas. Users can get useful overview information about the simulation, including important information about the release area (average slope, total capacity), traffic behavior (maximum flow and height), and stop behavior (mass flow). Maps and remote sensing images can be superimposed on terrain models to help determine input conditions and calibrate models based on known events. The ramms:: avalanche model has been used in more than 70 places around the world, and the software has been successfully applied to high mountain areas such as the Alps, Himalayas, Andes, Rockies, tatare and other areas.

Exams is an interactive software application for developing aquatic ecosystem models and rapidly assessing the processes, transport and exposure concentrations of synthetic organic chemicals, including pesticides, industrial materials and waste disposal sites. Exams contains an integrated database management system (DBMS), which is specially used to store and manage the project database required by the software. User interaction is provided by a fully functional command line interface (CLI), the use of flexible help menus, an online data dictionary, and a cli user guide, and maps the ability to check output data.

The vegetation model SSiB was developed in the late 1980s. It is based on the SIB proposed by sellers et al. In 1986. The simplification is mainly aimed at the calculation of radiation transfer, aerodynamic drag coefficient and stomatal resistance coefficient in plants. The simplified SSiB has 1 layer of vegetation, 3 layers of soil and 8 forecast variables (moisture of 3 layers of soil, water content of vegetation surface, snow cover of soil surface and leaf surface temperature). Therefore, there are only two predictors: soil surface temperature and deep soil temperature. In the model, stomatal resistance coefficient, soil resistance coefficient, vegetation boundary layer resistance coefficient and two-layer aerodynamic resistance coefficient are used to control the dynamic, thermal and water exchange between the earth and the atmosphere.

The n3dade model is used to evaluate solute transport in three-dimensional nonequilibrium porous media.

Rainoff model is used to calculate the rainfall runoff of a watershed (hydrological catchment area). Its expansion is limited by the condition that rainfall can be evenly distributed in the area. This model can be downloaded for free.