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Top Rated Billing and Invoicing Software with Open source - Page 21

Last updated: October 2026

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1130 software options

Blackthorn Payments logo

Focus on your customers instead of your payment processes

Payment platform built within Salesforce offering field service payments, subscriptions and billing, and more.

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Akti logo

Integrated business management for SMBs

Generate and send invoices in just a few clicks with Akti

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Djaboo logo

Djaboo is an all-in-one CRM designed for small businesses.

Djaboo is an all-in-one CRM that allows small businesses to develop their business without multiplying applications.

Djaboo helps you to increase your turnover by improving productivity and customer relationship management of your company. Don't waste any more time.

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WISO MeinBüro logo

German-language office management software

WISO Mein Büro 365 is an office management software. Many business areas can be managed in one software with WISO Mein Büro. The software covers areas such as offers and invoices, contacts, statistics & evaluations, banking and accounting.

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Access PeopleXD logo

Flexible and unified human resource management software

Access PeopleXD is an end-to-end cloud-based HR solution built for medium-to-large organisations, with modules including recruitment, workforce management, talent, learning and payroll. Our flexible modules enable you to build the solution you need now, and scale as you grow.

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Dynamics Mobile logo

Field service management solution

Dynamics Mobile offers a comprehensive suite of standalone and ERP-integrated mobile applications designed for businesses requiring advanced mobility solutions. The platform can be integrated with major enterprise systems including MS Dynamics 365, MS Business Central, MS AX/Axapta, and MS NAV/Navision, providing organizations with continuous operational capabilities even in offline environments. This integration enables businesses to maintain productivity regardless of connectivity status.

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NextGen Medical Billing logo

Simplify your Medical Billing workflow with NextGen

NextGen Medical Billing enables medical practitioners the ability to provide uninterrupted, high quality care while maximizing reimbursement. This platform is your designed to be your medical billing partner through thick and thin. Improve your practice's cashflow and profitability by equipping your billing staff with this Medical Billing solution.

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Comarch ECM Accounts Payable logo

Accounts payable solution

Automate Accounts Payable is a global AP automation software that automates accounts payable processes and eliminates paper-based document exchange with an AI-based AP automation software. It has a self-learning OCR engine and multi-ERP integrations.

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Gerencianet logo

Gerencianet is a digital account solution for entrepreneurs

Gerencianet is a digital account and collection management solution aimed at entrepreneurs. It's possible to access financial statements, make unlimited transfers, make payments with boleto vouchers, and more. These activities can be managed through apps for Android and iOS. Available in Portuguese only.

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Controlle logo

A system for integrated and centralized financial management

Controlle is Portuguese-based software that integrates and organizes financial management solutions for businesses with features that can manage accounts payable and receivable, entries by bank accounts or cost center, among other categories, and invoices with automatic delivery to clients.

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Expodite logo

Empower Exports with Expodite's Cloud Solution.

Expodite is a robust cloud-based order management platform tailored for exporters in India. It simplifies inventory, streamlines documentation, optimizes shipping, and enhances communication.

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ProGesSi logo

Choose your ERP, choose your customization, choose ProgeSsi.

A collaborate turnkey tool combining artificial intelligence (AI) with an on-demand team of engineers: we provide DSC of all sizes with the ideal tailor-made device for their management

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ELIT logo

Truly AI-Powered. Simply Intuitive

ELIT S2P Cloud Solution is is an advanced Source-to-Pay solution designed to automate, streamline and optimize procurement processes.

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Project 2 Payment logo

Simplified Invoicing, Payments, and Scheduling for Pros.

Project 2 Payment is a simple, all-in-one billing and invoicing solution built for home service professionals. Create and send professional invoices in seconds, get paid instantly with Quick Pay, and eliminate late payments with automatic reminders and payment tracking.

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Lendio logo

Sunrise, formerly Billy, is a cloud-based accounting system

Sunrise is a cloud-based accounting software which enables freelancers & creative professionals to manage billing efficiently & track expenses effectively

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Progressus logo

Project Accounting Software Built on Dynamics 365 ERP

Progressus, the first project accounting software built on Dynamics 365 Business Central, offers various features to streamline project management. Key functionalities include a Project Setup Wizard, adaptable task structures, efficient resource management, and the flexibility of customizations.

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Blue Note Systems logo

CRM software to manage leads, sales, quotes & campaigns

Blue note systems, based on SugarCRM, is a cloud-based customer relationship management (CRM) software designed to help businesses handle the entire sales cycle, from prospecting to providing customer service. Features include multi-channel marketing, lead nurturing, real-time analytics, and more.

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ddSuite logo

Digital documentation and maintenance management system

-Convenient billing after completion of work orders.
-Direct invoicing of material and quantity immediately after order completion.
-Deposit of product prices for direct billing.

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FoodRazor logo

Cloud-based invoice management software

FoodRazor is a cloud-based solution that helps track food costs, create purchase orders, and more.

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Send Invoice logo

Web-based invoicing for freelancers and small businesses

The web-based solution is available 24/7 from any computer, and provides an easy-to-use way of billing your customers by e-mail, PDF, or post. Choose any currency, upload your logo, set custom fields, choose your due date and set your terms.

Read more about Send Invoice

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SnapAP logo

Cloud-based Procure to Pay software platform

SnapAP is a totally paperless procure-to-pay solution covering purchase order approvals, electronic purchase orders, e-invoicing, and cash management

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EasyBilling logo

Invoicing & quotation tools for small businesses

EasyBilling is invoicing software designed for small and medium-sized enterprises that generates business documents including quotations, invoices, receipts, and delivery notes. The software offers customizable templates with options to add company logos, headers, and custom fields, while automating tax calculations and document numbering. It provides offline data storage on local computers and supports multi-company management with separate workspaces for different businesses.

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Evoliz logo

Online billing management solution

Online billing management solution that helps businesses manage stocks, invoice generation, orders, suppliers, banking, and accounting.

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Daxko Operations logo

Membership management software for non-profit organizations

Complete operations software for member-based nonprofits - integrating programs, billing, and check-ins in one secure system.

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Qvalia logo

Cloud-based accounting software for automatic invoicing

Qvalia is a customizable accounting platform that promotes collaborative workflows and provides users with automation tools to manage daily tasks. Key features include invoice processing, receivable ledgers, performance analytics, credit card processing, online payments, and order management.

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