Recurring Invoices provides a way for you to generate new invoices on a schedule.
Time Tracking for Projects
This add-on brings the Time Tracking features found in the paid versions of Sprout Invoices to the free version.
Payment Express – Credit Card Payments
Accept Invoice credit card payments via Payment Express Merchant Hosted solution.
beanstream – Credit Card Payments
Use beanstream as your credit card processor.
Authorize.Net – Credit Card Payments
Use the Authorize.net service as the credit card processor for invoice payments.
NMI – Credit Card Payments
Use NMI as your credit card payment processor.
Use BluePay for credit card processing your invoice payments.
Advanced Line Item Editor
Adds advanced editing to your line-items.
Advanced Form Integrations: Ninja Forms, Gravity Forms, Formidable, & WP Forms
Use your premium plugin based form to accept estimate requests that integrate with Sprout Invoices.