Is there an existing system which creates PDF pro forma invoices? It is for a Japanese auto exporter. The buyer first clicks on Purchase Inquiry, then he is taken to screen which shows the total cost (CIF = Cost including freight, this cost varies depending on the port. Freight to Dar es Salaam isn't the same as freight to Durban.) Once he sees the total cost, he Agree to Buy, and this should create a pro forma invoice as a PDF file. Then he remits payment, and gets notified when payment is received. Then send him a bill of lading and Trading is Complete notice. I really doubt there is some program that already does this; thinking it will be a custom coding job. Either way, would love recommendations. Either for script that does this, or a programmer who is able to create this script.
If you want something that can be customized check out OpenCart, there are a number of quoting / inquiry quoting mods available.
Connect to Apptivo Invoice App. They have launched new version. It has more features easy to customizable, recurring invoices, delay terms and more.
Recommendation: Best way for generating PDF invoice from within your program would be to use a small external program called wkhtmltopdf that is 100% free. If your program can generate report as html, you would have a lot freedom modifying and styling your HTML report, later let program convert it to PDF. It does outstanding job and we are using it at our production server where within a time-span of 24hours it probably generates more than 100k reports that go alongwith email to clients. Review this please: http://wkhtmltopdf.org/ Integration: Now little about programming stuff when html report is ready. You basically create a thread running said program as a process and better would be to wait until it finishes so that you do not submit half way created pdf file. We can provide example in variety of programming languages if you need just let us know. stay well...