Apps for extending your checkout

Build a unique checkout for your business.

4,322 apps
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ShipSure
Free plan available
Prevent lost packages by validating addresses at checkout.
Checkout IQ: Payment Rules
Free plan available
Customize COD and payment methods with advanced rules.
Gift Engine: Gifting, Notes
Free trial available
Add Gift messages and Gift wrap to Storefront & Checkout
Upload Native
Free plan available
Customer file uploads for product pages, cart & checkout
Invoice9
Free plan available
EU e-invoicing: ZUGFeRD, XRechnung & Factur-X
Citewise: LLMs.txt & GEO AI
Free plan available
See how AI search answers mention your brand and products.
Payment Rules Hide Payment
Free
Checkout payment rules to hide, rename, reorder, and review
SmartSellio: Upsell Cross‑sell
Free plan available
Boost sales with automated upsell, cross‑sell & bundle offers
Convertly : Creator Affiliates
Free to install
Ambassador marketing with auto storefronts & commissions
DROP. by Lighthouse
Free
Create drops, build hype, detect bots, give everyone a chance.
EcoShip ‑ Delivery Badge
Free
Show an eco-friendly badge on shipping rates you choose
AZ Bundles
Prueba gratis disponible
Aplica descuentos automáticos solo a productos de tu bundle.
PO Box Blocker ‑ MercSync
Free trial available
Prevent shipping errors by blocking P.O. Boxes at checkout.
Recoupon
Free trial available
See which discount codes fail at checkout — and recover them
Resello ‑ Product Resales
Free to install
Store credit for old items. Resale revenue for you
SDB ‑ On Sale Discount Blocker
Free trial available
Stop discount code usage on already discounted products
Easy Digital Downloads
Free
Instant digital file delivery directly on your Thank You page.
AI Upsell
Free
AI upsell recommendations guided by your business goals
B2B Terms Guard
Free trial available
Validate PO numbers and B2B payment rules at checkout.
Addify ‑ Hide Shipping Methods
Free trial available
Conditional rules to show, hide, or rename Shipping methods
Checkout Extender: All in 1
Free trial available
All in 1 checkout blocks, upsell, rules, validations, survey
Orderkraft: made to order
Free trial available
Add made-to-order production to your online store
NL Product Bundles
Free
Boost AOV with classic, volume, BOGO, and M&M bundles.
BlockCart: Checkout Validator
Free plan available
Cart rules and multi-condition checkout validation
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4,322 apps
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