It sounds like you're referring to a modding tool for , specifically:
The modding community for Fallout 4 has received a significant boost with the update of the All Fourplay F4SE (Fallout Script Extender) plugin. This plugin, designed to work in conjunction with the popular Fallout 4 mod, Fourplay, has been updated to ensure compatibility, stability, and enhanced performance. For enthusiasts of Fallout 4 modding, this update is a welcome development, offering new possibilities for gameplay customization and extension. ll fourplay f4se plugin updated
and specialized Discord servers occasionally post "dev-test" or beta builds intended for testing on newer game versions. Alternative Frameworks: Some users are migrating to the Native Animation Framework (NAF) It sounds like you're referring to a modding
