The objective of this presentation is to introduce a unique new plant breeding decision support software tool “DeltaGen”, implemented in R and its package Shiny. DeltaGen provides plant breeders with a single integrated solution for experimental design generation, data quality control, statistical and quantitative genetic analyses, breeding strategy evaluation/simulation and cost analysis, pattern analysis, index selection and underlying basic theory on quantitative genetics. This software tool could also be used as a teaching resource in plant breeding courses. DeltaGen is available as Freeware on the link: http://agrubuntu.cloudapp.net/shiny-apps/PlantBreedingTool/