Vide, the Vectrex Integrated Development Environment, has been enhanced to support the Vectex32 SmartCart. It provides a terminal emulator to give commands to the SmartCart, a file list that shows the files on the SmartCart's drive, and an editor window that shows the program you're working on.
You can read more about it and download the latest version (1.02) at http://vide.malban.de/what-is-vide (http://vide.malban.de/what-is-vide)
Many thanks to Malban for his work on Vide.