ENvironment for Visualizing Images (ENVI) is a software made for geospatial imagery processing and analysis. Remote sensing professionals and image analysts mostly use it. More information here.
For map creation, use of geographic information and management of geographic information in a database, a geographic information system is needed. ArcGIS has a vast community and continues to grow with new libraries and applications. More information here.
By the same name goes the numerical computing environment and the proprietary programming language. MATLAB is designed for those who want to work on matrix mathematics with applications on data analysis, signal or image processing or other applications. More information here.
SNAP is a free science toolbox exploitation platform supported by the European Space Agency. Developed for Earth Observation processing and analysis. More information here.