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Top Rated Billing and Invoicing Software with Open source - Page 25

Last updated: July 2026

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976 software options

Je Pilote logo

French-language invoicing and accounting solution

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Je Pilote is a French-language online invoicing and accounting solution, aimed at small businesses and startups. Users don't need to have prior knowledge and can manage quotes, cashflow,and commercial activity in a collaboration manner.

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Mamo Business logo

Digital payments and spend management for businesses.

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Consolidate payment collection, corporate cards, and expense management into one beautiful, intuitive platform to save on transaction fees.

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Paycove logo

Quoting, invoicing and payment automation for small business

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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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myBillBook logo

Cloud-based billing & accounting management software

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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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Plastiq logo

PCI-compliant payment processing platform

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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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Heartland Payments+ logo

Payment processing software for hospitality sector

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Heartland Payment Processing is a cloud-based solution that helps businesses in hospitality, medical, government and other sectors accept in-person and online payments via flexible methods, including credit or debit,EMV chip cards, digital wallets and more.

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Accelo logo

Move from operational chaos to profitable growth.

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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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metasfresh logo

License-free business software: customizable & updatable

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metasfresh ERP is a state-of-the-art, agile, license-free ERP software developed by metas GmbH from Germany. It is the first license-free open source ERP system for medium-sized companies from industry and trade in the DACH region that is able to compete with market-leading proprietary systems.

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Tipalti logo

Finance automation and accounts payable solution

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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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Simplero logo

All-in-one marketing software

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Simplero is a single software for your website, sales funnels, email marketing, online courses, and membership sites.

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vcita logo

Appointment scheduling and reminder solution

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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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PaySimple logo

Payments today. Partners for Tomorrow.

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

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InvoiceSherpa logo

Invoice payment reminder app

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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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CenterPoint Accounting logo

Accounting Software for Growing Businesses

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Accounting Software for growing businesses. CenterPoint Accounting Software works especially well for those outgrowing basic accounting systems, those requiring flexible financial reporting, and the management of multiple companies.

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Unanet ERP GovCon logo

Web-based integrated project management and ERP solution

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

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HDPOS smart logo

Billing & inventory software for all retail businesses

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HDPOS smart is a web-based billing and inventory software for small to mid-size businesses that comes with features such as barcode scanning, discount management, gift card processing, and invoice management. The system is integrated with many payment gateways to facilitate all payment methods.

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FreeAgent logo

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

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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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AvidXchange logo

Automated AP for mid-market businesses

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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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ablefy logo

A sales platform with payment processing.

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ablefy allows anyone wishing to sell courses and other products online to do so. This offer is an SaaS sales platform for companies of any size, which also handles payments if required.

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QuickBooks Money logo

Mobile credit card processor for vendors

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QuickBooks Money is a payment management and mobile payment gateway allowing vendors to process credit card transactions via mobile application. The payment platform uses a credit card reader plugin enabling users to process payments and request customer electronic signatures via a touch screen.

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Zoho Inventory logo

Order and inventory management for growing businesses

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Zoho Inventory streamlines operations for businesses, enabling them to manage their inventory, sales & purchase orders and shipments more effectively.

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a3factura logo

Invoicing, budgeting, and billing software for SMEs in Spain

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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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billage logo

Cloud-based invoicing and CRM software for SMBs

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

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Salesforce CPQ & Billing logo

Next generation Configure Price Quote (CPQ) apps

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Salesforce CPQ is a configure price quote solution fully native to the Salesforce platform that delivers automated sales quoting with out-of-the-box capabilities like Guided Selling and Pricing & Discount Schedules, to save time while turning around accurate branded proposals, all without leaving Salesforce

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MineralTree TotalAP logo

Accounts payable & payment automation

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

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