Invoice is not very extensive, but very easy to use, free invoicing software. In addition to printing invoices, it allows you to keep records of contractors, products and services (without stock levels) and keeps a simple register of issued invoices. The biggest advantage of the Invoice software, apart from the fact that it is free of charge, is the printout editor, which allows you to freely define the appearance of the invoice and the way of calculating the invoice value (from net or gross prices).

Additional advantages of Invoices are: the ability to print a transfer/payment to a bank, a correction note, printing data on envelopes and stable work and lack of visible errors in contrast to other (often amateur) free programs to issue invoices.