Developed by GeoSphere Systems located in Doylestown, Pennsylvania, USA, the PlantSafe System is a rapid decision-support tool for managing a variety of critical situations including accidental releases and similar plant emergencies. It includes an air dispersion model called QuikPlume.

This software models the dispersion of dense gas releases from an evaporating pool, a horizontal jet, a vertical jet, or an instantaneous volume source. The dispersion is calculated from the conservation equations of mass, momentum, energy, and species. The conservation equations are spatially averaged to treat the cloud as either a continuous plume, a transient puff, or a combination of the two depending on the release duration. SLAB was developed by the USA's Lawrence Livermore National Laboratory.

Dr. Tom Spicer and Dr. Jerry Havens of the University of Arkansas developed this model (for the U.S. Coast Guard and the Gas Research Institute) primarily for simulating the dispersion of denser-than-air flammable gases. The U.S. EPA later extended DEGADIS for dispersion modeling of vertical jets. Implementation of DEGADIS on personal computers was sponsored by the Gas Research Institute and the American Petroleum Institute.

The RITE Emergency Response is a collection of tools and weather models designed to assist emergency response personnel in predicting the flow and dispersion of toxic releases into the atmosphere. It incorporates 3D wind field and air dispersion models, developed by ARIA Technologies of France, as well as site-specific topographic data.

A firm located in Hamburg, Germany which markets air dispersion modeling software that meets the standards developed by: the Association of German Engineers (Verband Deutscher Ingenieure, or simply VDI), and by Germany's Federal air pollution control regulations (known as TA Luft).

A simple model developed at the Oklahoma State University (in the USA) to assess the atmosphere's ability to disperse gases and particulates released at near ground level. The focus of the model is to evaluate downwind pollutant concentrations at distances of 1/4 mile to 2 miles (although greater distances would apply).

The Nuclear Accident Model (NAME) is an essential part of the contingency plans for accidental releases of radioactivity into the atmosphere: to provide early warning for emergency response and to predict concentrations, depositions and dosages of radionuclides. Use of the model is administered by the National Meteorological Centre of the United Kingdom's Meteorological Office at Bracknall, Berkshire, UK.

A three-dimensional Lagrangian model for dispersion over complex terrain. It was developed in Greece by the Environmental Research Laboratory (EREL) which is part of the Greek National Center for Scientific Research (DEMOKRITOS).

Developed by AlphaTRAC, the Computer-Assisted Protective Action Recommendation System (CAPARS) provides plume extent, weather, hazard, and related information needed to support all levels of emergency management and response to an accidental release of hazardous gas. AlphaTRAC is located in Westminster, Colorado, USA.

The Titan Systems Corporation is a technology research and development group headquartered in San Diego, California and serving the U.S. defense and intelligence communities. The group has developed a Lagrangian puff dispersion model known as the SCIPUFF model.