I am looking for a web app where I can have clients place orders (free open-source if possible); apps solely for order entries. Other obvious needs like what to do do with the data once saved by the clients or how to integrate that data to an accounting software ,is not the scope here, but if the info is available, it's ok.
If there is no such web apps solely for this types of need, then what would be you recommendation for developing said web apps? Like what development tools to use, what database, etc.
Thank u guys!