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Top Rated Billing and Invoicing Software with Api - Page 17

Last updated: September 2026

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644 software options

Payfacile logo

One-time and recurring payments solution for businesses

Payfacile is a cloud-based payment solution designed to help businesses across multiple industry verticals automate billing processes for accepting payments online. It lets users create payment links, which can be sent via email to clients in order to accept payments via IBAN or credit card.

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Total Synergy logo

Business and project management software for AEC businesses

Synergy is the cloud-based software for efficient architecture, engineering, and construction design (AEC) business and project management. Enhance profitability by managing operations, jobs, and cash flow. Achieve efficiency, control, and profitability with Synergy.

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Asaas logo

Asaas is a financial management platform for businesses

Asaas is financial management software for businesses that offers access to a complete digital account, allowing the anticipation of receivables from installment sales, automates invoices, and provides information on customer credit scores and financial issues. Available in Portuguese for Brazil.

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ONE UP logo

All-in-one invoicing, accounting, inventory, CRM & expenses

Why should you run your business with different apps that don’t even talk each other? You deserve a great all-in-one solution to power your success. myERP is a unique app that runs on your desktop, tablet or smartphone to help you take your business to the next level.

Integrated: CRM, Invoicing, Accounting & Inventory
Cloud-based: Access and collaborate from anywhere

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FreeAgent logo

FreeAgent has been voted the UK's #1 accounting software.

New customer offer: 50% off for the first 6 months. Fully customisable HMRC compliant invoices, automatic late payment reminders, online payments.

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vcita logo

Appointment scheduling and reminder solution

Create and email branded invoices and track your business income with a centralized dashboard. Let clients pay for your services online, accept any credit card.

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myBillBook logo

Cloud-based billing & accounting management software

myBillBook is a GST billing and accounting software designed for small businesses to simplify their billing & management. Offering customized invoicing, e-invoicing, and expense tracking, it supports inventory management, purchase recording, and payment reminders.

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Paycove logo

Quoting, invoicing and payment automation for small business

Paycove enables business to create and send one-off & recurring invoices directly from their CRM, and process payments, automating the invoicing workflow

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AvidXchange logo

Automated AP for mid-market businesses

AvidXchange automates billing and invoicing for mid-market businesses. AvidPay bill payment software and AvidInvoice invoice management software streamline your entire billing and invoicing process while matching your current approval workflows.

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Plastiq logo

PCI-compliant payment processing platform

Plastiq is a PCI-compliant payment processing platform that helps businesses in eCommerce, accounting, construction, education, manufacturing, logistics, and other sectors track, organize and manage finances and credit card payments.

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PaySimple logo

Payments today. Partners for Tomorrow.

PaySimple is the leading payments management solution for service-based businesses, powering the cashflow of over 20,000 companies nationwide.

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Alegra logo

Accounting & billing for SMEs and accountant.

Alegra is an accounting software designed for small to mid-sized businesses and accountant. The product provides tools for general ledger, accounts receivable, accounts payable, bank reconciliation, and financial reporting. Alegra integrates with popular ecommerce platforms and POS systems.

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Intervals logo

Time tracking, task management, & project management.

Discover a better way to track your time and manage your task with Intervals. More than simple time tracking, less than enterprise complexity. Deliberately in the middle with features that are ideal for small businesses.

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Tipalti logo

Finance automation and accounts payable solution

Tipalti is the only solution to automate your invoice processing alongside end-to-end accounts payable, global payments, and procurement. Integrates seamlessly with QuickBooks, NetSuite, Xero, Sage and more.

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Airwallex logo

Payment and financial management solution

Airwallex provides global businesses with an all-in-one account to help businesses grow and operate globally, offering access to domestic and foreign currency accounts, high speed international transfers, global bill pay, online payment links and plugins, multi-currency cards, expense management, software integrations and APIs to programmatically manage finances.

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InvoiceSherpa logo

Invoice payment reminder app

InvoiceSherpa is an invoice management and debt recovery application that helps to track and follow up with overdue payments. It integrates with major accounting apps, automatically extracting invoice and customer data from the core accounting software, and updating the data when payments are made.

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Billdu logo

Billdu - fast and simple invoicing app for small businesses

Billdu is an invoice maker for small businesses and freelancers which enables users to create and send invoices, track expenses, manage online stores, and more.

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Unanet ERP GovCon logo

Web-based integrated project management and ERP solution

Unanet is an integrated project management solution which offers tools for resource planning, accounting, workforce collaboration, timesheet management and more

Read more about Unanet ERP GovCon

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billage logo

Cloud-based invoicing and CRM software for SMBs

billage is an online CRM and client billing & invoicing solution for freelancers, micro-enterprises and small businesses

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ablefy logo

A sales platform with payment processing.

ablefy allows anyone wishing to sell digital products, coachings, services with modern payment methods and a good converting checkout.
Add upsells, affilliate programs, dunning and collection or create your multilevel sales team with comisssion payouts.

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a3factura logo

Invoicing, budgeting, and billing software for SMEs in Spain

a3factura is Spanish-language software designed to issue budgets and invoices for SMEs and freelancers in Spain. It also manages collections and payments and prepares statistics on customers, products, and their profitability, and enables connection with the account manager. It is based in the cloud and accessible from any device.

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MineralTree TotalAP logo

Accounts payable & payment automation

Payment automation solution for mid-sized businesses. Integrated with accounting systems / ERPs.

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Gofrugal logo

ERP solutions for retail, restaurants & distribution

GOFRUGAL offers retail, restaurant, distribution and Enterprise businesses a range of ERP and Point of Sale (POS) solutions suitable for multiple trades, with a cloud-based option boasting multi-store management, inventory control, purchase automation, BI reporting & data syncing for offline access

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Accelo logo

Move from operational chaos to profitable growth.

Accelo automatically builds invoices from logged time, expenses, and approved work — eliminating manual billing cycles. With retainer management and QuickBooks/Xero integrations, teams recover 3–7% in previously untracked revenue.

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Bind ERP logo

Bind ERP: Simplifica tu negocio, crece sin límites

Bind ERP es un software todo-en-uno para pymes que optimiza las operaciones empresariales, desde ventas hasta contabilidad. Con acceso en la nube y conexión directa con CONTPAQi Contabilidad, Bind ERP simplifica la administración del negocio, eliminando errores manuales y aumentando la eficiencia.

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