Flutter Redux Thunk, an example, by Jack Wong

Building a (large) Flutter app with Redux, by Hillel Coren

Fish-Redux–An assembled flutter application framework based on Redux,
by Alibaba

Async Redux–Redux without boilerplate. Allows for both sync and async reducers,
by Marcelo Glasberg

Flutter meets Redux: The Redux way of managing Flutter applications state,
by Amir Ghezelbash

Redux and epics for better-organized code in Flutter apps, by Nihad Delic

Flutter_Redux_Gen - VS Code Plugin to generate boiler plate code, by Balamurugan Muthusamy (BalaDhruv)

Fish-Redux

Fish Redux is an assembled flutter application framework
based on Redux state management. 
It is suitable for building medium and large applications.