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.
synergy_mainpay Adds support for MainPay gateway.
spree_special_offers Adds special offers block in sidebar.
synergy_inventory_management An interface where administrator can manage products easily on one page and quickly perform the common products actions.
Spree Canadian Tax Add canadian's taxes calculator to your tax rates selector
Spree FlexiRate Extended Flexible Replacement/Hack for less-flexible flexirate
spree-heroku Spree on Heroku
Spree Garbage Cleaner A little gem that helps you cleanup old, unneeded data from a Spree database.
Spree Canada Post Spree Canada Post Extension
Spree Products Labels An extension for managing and adding new labels to products
spree_local_tax Calculate local taxes by county + state or zip matching