Every option below can send an invoice, so the real question is which one knows what a gram of alloy and an hour at the bench are worth.
Most software an independent jewelry designer looks at was built for a different shape of business. Some of it assumes a retail case, a staff and a repair counter. Some assumes a service business with packages and bookings. Some assumes you sell finished stock at shows. A commission is none of those. The price is not known until the finished metal weight, the stone and the bench hours are settled, and a good share of the money should land before you cut a single sprue.
These pages stay at the level of fit. We describe what kind of tool each option is and the workflow it assumes, and we leave out prices, plan names and feature claims, because those change and we will not guess at them. Where another system genuinely suits how you work, we say so. A designer who sells mostly finished inventory at markets should not be running a commission quoting tool, and a designer who lives on remounts should not be typing ring quotes into a general invoice.