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Top Rated Billing and Invoicing Software with Open source - Page 13

Last updated: July 2026

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977 software options

Oneir logo

Enterprise resource planning and financial management tool

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Oneir Solutions is ERP software for retail, manufacturing, and wholesale businesses. Manage sales orders, POS, inventory, financials, contract billing, and customer relationships in one platform while gaining visibility into operations and performance.

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Chargezoom logo

Pivot & scale with powerful billing & payments for everyone

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Use your existing payment gateway with Chargezoom. Start syncing payment transactions and invoices directly into your accounting software in minutes.

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Taskomat logo

Project and ROI management for teams

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Taskomat is a cloud-based project management and ROI tracking tool for Italian entrepreneurs and freelancers. The platform offers tools for automating workflows, planning and tracking tasks and projects, monitoring budgets and ROI (return on investment), generating invoices, and more.

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Fakturia logo

Automated billing for the european market

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Subscription-Managment-Software that automizes billing. Integrated SelfService-Portal, REST-API, SEPA-Direct-Debit, PSP support.

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Hubstaff logo

Centralized app for time tracking and productivity metrics

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Streamline your billing with Hubstaff: automate and track invoicing and billable hours seamlessly. Enhance your brand with customizable invoices. Easy integration with QuickBooks, PayPal, and more. No credit card needed, available for iOS and Android. Simplify billing in a few clicks.

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Recovr logo

Accelerate Cash Flow, Automate Collections

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Recovr is an innovative accounts receivable automation platform that acts as a CRM for collection teams. By centralizing data, automating follow-ups, and providing actionable insights, Recovr helps businesses optimize their Order-to-Cash cycle while maintaining strong customer relationships.

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FREEBE logo

All-in-one freelance management and billing solution

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FREEBE is a freelance management and invoicing software that helps self-employed professionals manage micro-enterprises and payments.

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Namu logo

Cloud-based financial management software for freelancers

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Namu is a cloud-based financial management software designed to help freelancers manage invoicing, retirement and tax planning, accounting, and reporting, among other processes on a centralized platform. Self-employed professionals can manage their back-office functions seamlessly in one app.

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Munim Accounting and Billing logo

Digital Munim For Your Business

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With this software, you can easily create and manage ledgers, sales invoices, purchase bills, GST billing, report management, and many more.

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omniBilling logo

Powerful online billing software for all your payments

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From start to finish, manage your customer subscription billing life cycle with ease using Omnibasis. Automate recurring billing, manage subscriptions, send professional invoices, and ensure timely payments every time.

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Juntrax logo

PSA solution for streamlining operational processes

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Juntrax is a cloud-based professional services automation (PSA) platform that helps businesses manage operational processes related to employees, sales, and more. It allows users to generate custom invoices, dashboards, and reports, and deliver statements of work (SoW) to vendors as well as clients.

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IPaidThat logo

Cloud-based accounting tool to manage business finances.

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iPaidThat is a complete solution for managing accounting and finance for your business. It offers automated invoice collection and processing, bank reconciliation, expense reporting, supplier payments, e-invoicing, cash flow forecasts, and more to simplify financial management.

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Web Office Suite logo

e-commerce software

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Web Office Suite is an e-commerce solution that helps users with their back-end support of their websites.

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InvoiceXML logo

AI-powered invoice compliance platform

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InvoiceXML is an e-invoicing compliance automation platform that converts legacy PDF invoices into standardized formats including ZUGFeRD, Factur-X, XRechnung, UBL, and CII. The software uses AI-powered extraction to process scanned or unstructured documents and validates invoices against official standards and Schematron rules to ensure compliance with European e-invoicing regulations.

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ServiceDeck logo

All-in-one Solution for All Field Service Management needs!

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ServiceDeck is an ultimate field management service software that integrates the success of your business, the workload of field workers, and the needs of your customers. Powered by a vast number of features, ServiceDeck empowers your management and on-site teams for higher efficiency and success.

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Opencell logo

Stop selling product. Start selling recurring services.

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Opencel is a subscription management platform that helps businesses streamline the billing and invoicing processes on a centralized dashboard. It provides businesses with the tools they need to take control of their revenue streams, enhance customer experiences, and adapt to the ever-evolving subscription economy.

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Yendo logo

Small Business ERP

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Business Accounting for UK and Eurozone countries. Everything you need including invoicing, expenses and payments. Smartphone Compatible.

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Storecove logo

E-invoicing for Software Providers

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Are customers asking for complex and time-consuming e-invoicing features? Become a partner to provide advanced e-invoicing solutions to other companies. We build the products, you handle the integrations. Request a test account to get started.

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Stack360 logo

Web-based Business Management Software

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Business management software that helps users manage clients, track attendance, handle employee benefits, customize invoices, and more.

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eSigns logo

Electronic Signature Software

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eSigns is a secure digital signature software solution with standardized templates, collaboration tools and forms.

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omniBooks logo

The all-in-one cloud financial and accounting software

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Powerful online accounting software for all your business finance management needs. Grow and track your business with omniBooks.

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billfaster logo

easy-to-use accounting software for small business

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billfaster is an online accounting web application that provides startups, freelancers, and small businesses the fastest way to account for their business.
7 second invoicing, 3 second expense tracking and automated accounting enables its users to be up & running straight away.

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Fanurio logo

Time tracking software application

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Fanurio is a time tracking software application, highly appreciated by freelancers for its simple interface, flexible timer and ability to produce detailed invoices.

Whether you need to round time, use multiple currencies or create invoices with your own layout, Fanurio has the right tools to help you get paid.

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Facturama logo

Your easiest way to issue SAT-compliant invoices.

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Create and send SAT-compliant CFDI 4.0 invoices in minutes. Automate billing, manage clients, and track payments with Facturama’s easy-to-use invoicing platform.

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Software Semplice logo

Cloud invoicing for SDI-compliant businesses

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Software Semplice is a cloud-based billing and electronic invoicing solution for Italian freelancers and small businesses, designed to manage SDI-compliant invoices, quotes and reminders with ease.

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