# Uni CPO Add-ons

- [Custom dynamic SKU (paid)](/uni-cpo-4-documentation/uni-cpo-add-ons/dynamic-sku-for-woocommerce.md): Paid add-on for Uni CPO 4 plugin. Support available!
- [Stock management based on dynamic SKU](/uni-cpo-4-documentation/uni-cpo-add-ons/dynamic-sku-for-woocommerce/stock-management-based-on-dynamic-sku.md): This page includes overview of stock management functionality based on dynamic SKUs.
- ["Send Inquiry" (free)](/uni-cpo-4-documentation/uni-cpo-add-ons/send-inquiry.md): Free add-on for Uni CPO 4 plugin. No support provided. Use it "as is".
- [Hidden/disabled option (free)](/uni-cpo-4-documentation/uni-cpo-add-ons/hidden-disabled-option.md): Free add-on for Uni CPO 4 plugin. No support provided. Use it "as is".