We don’t offer anything in the free space, but have a number of commercial extensions covering the shipping via Product capability - I believe we are the largest Shipping extension site on Magento.
I’d like to clarify that the reason we charge is simply so we can provide a good service to our customers, who obviously tend to be businesses. We don’t leave our customers with extensions and no support, and although I’ve got involved in the community space (Matrixrate has had over 11000 downloads) I’ve found that I couldnt offer the level of support people wanted at no cost.
The extensions that are most widely used in this are area:
1) Productmatrix - for custom table rates
2) Shipping Override - for use in interaction with live rates (e.g. if you want to offer flat rate shipping on selected items, but UPS on others)
If you wish to discuss your requirements either contact us via chat on webshopapps.com or drop me an email at .