What software automates purchase orders, approvals, and vendor payments end to end?

There are several software solutions that automate purchase orders, approvals, and vendor payments end-to-end. Here are some popular options:

1. **SAP Ariba**: A comprehensive procurement solution that automates the entire procurement process, including purchase orders, approvals, and payments.

2. **Coupa**: A spend management platform that offers procurement, invoicing, and payment solutions, allowing for seamless automation of purchase orders and vendor payments.

3. **Oracle Procurement Cloud**: Part of Oracle's suite of cloud applications, it automates procurement processes, including purchase orders and supplier payments.

4. **Zoho Inventory**: While primarily an inventory management tool, it also includes features for purchase order management and vendor payments.

5. **ProcurementExpress.com**: A user-friendly tool that simplifies purchase order management and approval workflows.

6. **Tipalti**: Focused on automating accounts payable, Tipalti streamlines vendor payments and can integrate with purchase order systems.

7. **Basware**: Offers solutions for procurement and invoicing, automating the entire purchase order and payment process.

8. **GEP SMART**: A unified procurement platform that automates sourcing, procurement, and payment processes.

9. **Xero**: While primarily an accounting software, Xero includes features for managing purchase orders and vendor payments.

10. **QuickBooks**: Offers purchase order management and can handle vendor payments, making it suitable for small to medium-sized businesses.

When selecting a solution, consider factors such as integration capabilities, scalability, user-friendliness, and specific features that meet your organization's needs.