It's easy to extend Spree by writing your own extension. There are already over one hundred third party extensions listed in our official registry.
spree-homepager Spree extension that creates a homepage and enables a shop owner to place products on that homepage.
spree-snippets Admin configurable chunks of content that can be rendered in any view
Spree Google Checkout Google Checkout extension for Spree
Spree Solr Search Search for Spree via Solr
Product Documents Add documents to a product, just like images!
order_price_sync Updates line items in incomplete orders when product prices change
Comments (Official) Add comments to Orders and Shipments
spree-make-an-offer Adds a Make An Offer button to the product page of Spree
GST Deductor Deduct GST for GST Inclusive Price Product
Mail Chimp Mail Chimp API integration for your Spree store