This repository contains footprints for various SSOP / TSSOP packages - https://en.wikipedia.org/wiki/Small_Outline_Integrated_Circuit#SSOP
This repository is now considered legacy in preparation for the v5 KiCad software release. It will not accept any further pull requests. To contribute, please refer to the new kicad-footprints repository at https://github.com/kicad/kicad-footprints