Nop-Station Auto Cancel Order plugin for NopCommerce allows store owners to automatically cancel orders with specified order statuses and payment methods after a set amount of time.
nopStation's Product Q&A plugin for nopCommerce lets you enable a Q&A section on your online store's product pages and set which customer roles are allowed to ask or answer questions. This plugin lets customers ask questions anonymously and lets the store admin approve or hide customer questions and answers as well.