ReActiv is an interactive computer program for designing reinforced slopes in a wide variety of soil types, using reinforced soil or soil nails. ReActiv's user interface has been designed to make the program simple to use and quick to learn - without sacrificing the level of control over calculations that engineers demand.

ReActiv implements and extends the design method given in the UK Highways Agency’s Advice Note HA68 on Design methods for the reinforcement of highway slopes by reinforced soil and soil nailing techniques (1994), which can be found in the HA’s Design manual for roads and bridges, Volume 4 Geotechnics and drainage