
Accounts payable, procurement, and spend.

avidxchange
AvidXchange is an AI-enhanced accounts payable automation platform that helps organizations receive, manage, and pay invoices across invoice automation, payment automation, purchase orders, and spend management—integrating with 240+ accounting and ERP systems. An unofficial API lets you programmatically pull invoices, payments, suppliers, purchase orders, and approval status, and push updates like new invoices, payment instructions, and supplier onboarding back into AvidXchange.

tipalti
Tipalti is an AI-powered finance automation platform that runs global accounts payable, mass payments, procurement, expenses, and treasury for scaling businesses across 200+ countries. An API lets you programmatically pull payees, invoices, bills, payment orders, and payment status—and push updates like supplier onboarding, bill approvals, and payout batches back into Tipalti.

plooto
Plooto is an accounts payable and accounts receivable automation platform that gives accounting firms and their SMB clients one place to pay bills, collect invoices, route approvals, and reconcile two-way with QuickBooks, Xero, and NetSuite. Plooto has no public API—an unofficial API lets you programmatically pull bills, invoices, payments, vendors, and approval status, and push new bills, payment instructions, and approval actions back into Plooto.

routable
Routable is a financial technology platform that automates mass payouts, vendor onboarding, and accounts payable for scaling businesses. An unofficial API lets you programmatically pull vendors, payables, payment methods, funding accounts, and tax forms—and push updates like new bills, mass payouts, vendor invitations, and reconciliation events back into Routable.

melio
Melio is a B2B payments platform for accounts payable and receivable, letting businesses pay bills and get paid via ACH, instant transfers, virtual cards, and paper checks, with OCR bill capture, approval workflows, and two-way QuickBooks and Xero sync. An unofficial API lets you programmatically pull bills, vendors, payments, invoices, and approval status—and push actions like scheduling payments, creating invoices, and onboarding vendors back into Melio.

plateiq
Plate IQ (now Ottimate) is an AI-powered accounts payable automation platform that digitizes invoices to the line item to drive coding, approval workflows, and payments via ACH, check, and virtual card. An unofficial API lets you programmatically pull invoices, line items, vendors, purchase orders, GL codes, approvals, and payment activity—and push updates like new invoices, approval decisions, and scheduled payments back into Plate IQ.