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Top Rated Billing and Invoicing Software with Api - Page 4

Last updated: September 2026

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644 software options

Digital Manager Guru logo

Marketing automation platform

Complete platform for online sales: optimized checkout, subscription management, recurring billing, and automated invoice issuance.

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Wethos logo

All in one software made for freelancers, by freelancers.

On Wethos, you can take your proposal creation time from hours to minutes, create and send invoices to clients, and get paid - without ever having to switch tabs. Leverage Wethos' template library to scope your work and get paid.

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Assembly logo

The new standard for modern service businesses.

Create remarkable client experiences. CRM, portal, payments, tasks, contracts & more — with an AI Assistant that works for you.

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DealHub logo

Agentic Quote-to-Revenue platform for enterprises

DealHub is the unified Agentic Quote-to-Revenue (Q2R) platform built for complex, modern GTM motions. The platform empowers high-growth SaaS and forward-thinking enterprises to automate and accelerate their entire revenue lifecycle.

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QT9 ERP logo

Cloud or on-premise enterprise resource planning software

Billing & Invoicing software made easy. Automate the processes of producing & sending invoices & receiving payments with an easy-to-use cloud-based platform. Connect billing & invoicing to Quoting & Sales Management with email alerts, PO matching & FDA 21 CFR Part 11 compliant electronic approvals.

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WORKetc logo

Business management system for SMBs

WORKetc lets you automatically capture & invoice all company-wide activities. Generate timesheets & invoices, track payments, manage tax & discounts, and more

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DualEntry logo

AI-native accounting

DualEntry is an AI-native accounting software designed for high-growth enterprises, offering a general ledger, automated close management, tax compliance, and integrations. With security, real-time insights, and global compliance, it helps users streamline financial operations.

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Axelor logo

Cloud-based ERP solution for small to midsize businesses

Axelor is an open source ERP, CRM, and BPM platform powered by AI and Low Code. Modular and customizable, it combines business apps, workflows, analytics, portals, and 1,500+ connectors to help organizations build flexible, intelligent, and scalable management systems.

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ConvergeHub logo

Sales, marketing, customer service & billing CRM for SMBs

Create invoices for products and services and track payments received. Integrate with QuickBooks. Get paid on time and manage your cash flow.

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MotorDesk logo

Dealer management software for independent dealers

Create and manage vehicle purchases, sales and customer invoices with VAT tracking and integration with Xero, QuickBooks and Sage.

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Payaca logo

Simple, yet powerful, CRM solutions.

A CRM solution for ambitious field service businesses. With a focus on simplicity and efficiency, we empower businesses to streamline operations, build strong customer relationships, and fuel growth. Developed by software experts, Payaca is designed for adaptability and continuous improvement.

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FieldPulse logo

Cloud-based field service management software

FieldPulse is a cloud-based field service management software designed for service contractors that helps manage business operations and workflows, including customer management, scheduling, project management, estimates and invoices, timesheets, customer portals, and more.

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INFast logo

For entrepreneurs who manage their own invoicing

INFast is a cloud-based software designed to help businesses generate invoices, create financial documents and streamline other accounting processes.

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Finix logo

Payment processing solution for software platforms

Finix offers payment processing configurations to help software platforms build payment experience for their customers.

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Orcatec logo

Cloud-based field service management software

Orcatec is a cloud-based field service management software designed to help businesses handle and streamline various administrative processes, such as dispatching, employee management, and more. Supervisors can schedule appointments on a calendar and color-code them according to requirements.

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Biller Genie logo

Automated. Integrated. Simplified.

Biller Genie seamlessly connects to your accounting software and automatically sends invoices, reminders and past due notifications via email & paper mail. Your customers can pay invoices online via credit card, ACH or Apple Pay and payments are automatically closed in your accounting software.

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Radom logo

Cryptocurrency payment processing

Radom is a crypto payment processor offering a comprehensive billing solution for subscriptions, invoices, and payments, including APIs and Webhooks. Features encompass white-labeled payments, pre-built crypto checkout pages, no-code payment links, subscription management, online crypto invoices, and donation options.

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BigTime logo

AI-powered scoping, project, time, and billing software

BigTime helps reduce operational costs, align talent to projects, accelerate payments, and enable decision-making. With 20+ years of experience, BigTime can get you up and running quickly, operate with flexibility and agility, and enable you to solve today’s challenges and scale with you tomorrow.

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PayEm logo

Global spend & procurement platform

Go beyond the tired billing & invoicing procedures with PayEm. PayEm's platform simplifies bill payments, whether done by credit card or ACH. The platform allows for digital uploads of vendor invoices, automatic payment scheduling & customized approval flows, using streamlined NetSuite integration.

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Moonflow logo

The only infrastructure AI-native

Moonflow is an AI-native debt collection infrastructure that helps businesses automate workflows, negotiate with customers, and reduce operational costs without adding headcount.

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OneBill logo

Lead to Revenue Redefined

OneBill is a revenue management software that provides businesses with tools to streamline subscription management and billing processes. It enables to manage administrative operations, including automated order provisioning & activation, CPQ, revenue reporting, commission management, etc.

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Fortis logo

Embedded payments and invoicing for B2B workflows

Fortis is a payment processing and invoicing solution that helps businesses receive payments, monitor transactions, capture eSignatures, send payment requests, and more on a centralized platform. It enables team members to create one-time and recurring invoices in compliance with PCI-DSS guidelines.

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Blink Payment logo

Platform for accepting and reconciling payments

Blink Payment simplifies payment collection and reconciliation. Send Paylinks, take payments online, over the phone or in person, and accept cards, open banking, digital wallets and Direct Debit. Xero, QuickBooks and Sage integrations help reduce admin.

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Zigaflow logo

Make running & growing your business easier

Zigaflow simplifies business management, offering automation, customization, and integration. Designed for diverse needs, it enhances efficiency, security, and growth across all operations.

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Kefron AP - Accounts Payable logo

Making finance flow

Kefron AP is an accounts payable automation platform for finance teams processing 500+ invoices a month. Kefron AP tracks and boosts your touchless processing rate. This is the share of invoices that reach your finance system with no manual work.

Read more about Kefron AP - Accounts Payable

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