LitExtension supports convert products easily from oscommerce to woocommerce with http://litextension....oocommerce.html.
- SKU, Product Name, Description, URL*, Quantity, Stock Status, Model, Weight ...
- Base Image, Additional Images
- Base Price, Special Price
- Assign to Product Categories
- Attributes (Color, Size ...)
- Options (Size; Weight, Color ...)
- Extra Fields ( Checkboxes, Dropdownlist, Radiobuttons)
- Variants: can be grouped with related variants together to form a product
- Meta Title, Meta Description, Meta Keywords
- Currencies
You can should check how to convert in some steps at