One Step Checkout Extension- This is easy and simple checkout steps for magento website

One Step Checkout Extension Features:

User friendly checkout interface
All steps on a single page
Ajax email validation
Ajax loading script
Automatically update the Grand total on alteration of shipping method
Light box login box
Very easy to configure options in admin back end
Configurable payment method
Clabels are changable
Flexible displays for fields whether mandatory or optional and enabled or disabled
Optional checkbox for billing address to be shipping address
Configurable delivery options with different delivery cost for countries
Automatically update the Grand total on selection of delivery option
Automatically update the delivery option when shipping address is changed
Optional or already-checked box for Newsletter Category subscription
Checkbox for Terms and Condition agreement
Enable/ disable gift message box
Multi-stores support