I require a POS software for Windows and Linux with the accounting software attached to it. so whenever there is a sale or purchase, cash or credit, expense etc. its accounting is done automatically at the back end and a report can be generated. Moreover, The software should be able to send the data remotely to my sever. For example the software is installed in UK, the data from that PC would be seen in USA. Lastly, I should be able to add or remove options on my own and customize the software as i like without the need of hiring the programmer again.