I wrote this react/redux application during my civil service in Austria. We had to fill in printed sheets about the amount of food/drinks we sold on a day and calculate how much is left in the kitchen and in the basement. As I was trying to learn react and redux I did this little project to get familiar with these technologies.
First you need to download all the dependencies with npm install. To start the application just enter npm start, the page will be accessible at localhost:3333.
The state is stored in store/state.json and the clients sync trough socket.io.