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Top Rated Billing and Invoicing Software with Open source - Page 10

Last updated: October 2026

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1130 software options

Recovr logo

Accelerate Cash Flow, Automate Collections

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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ActiveCollab logo

A productivity and collaboration workspace for teams

In ActiveCollab, you can create and send out custom invoices, including eInvoices, link them to your QuickBooks account, and analyze for insights into your pricing, client payment behavior, and more.

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Online Check Writer logo

Software for managing payments and accounting operations

OnlineCheckWriter.com is check printing software and a B2B payment platform with 30+ business payment tools. Pay and get paid with checks, eChecks, ACH, wires, international payments, and credit cards. Connects with QuickBooks, Xero, and more.

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B2Brouter logo

Create, send and receive e-invoices quickly and easily.

B2Brouter is an e-invoicing software that allows you to create, send and receive electronic invoices quickly and easily. You can use the portal or integrate the solution to your management software via API.

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Octayne PSA logo

AI-powered professional services automation

Octayne PSA is a professional services automation platform designed for consulting firms and service providers. The solution offers time tracking with calendar integration from Outlook, Google Calendar, and Jira, converting scheduled events into time entries. Features include expense management, automated invoicing, resource planning with Gantt-style project management, utilization tracking, and approval workflows.

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Cheqbook logo

Smart Online Accounting

Cheqbook is fast and easy to pick up for business owners while having the pro features that accountants and bookkeepers need. We can save business owners two weeks a year through our patent pending import and smart categorization.

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Info-Tech Accounting Software logo

Your Business Financial Operations Simplified

Info-Tech Accounting Software grants business owners the ability to ease their accounting process by automating calculations for payrolls, creating invoices & bills and keeping track of business stocks.

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Atamis Procurement Software logo

Centralise and Collaborate

The Contract & Supplier App provides Procurement with a strong database for suppliers and contracts, acting as the backbone of actionable data which is fundamental for Procurement to drive value, increase efficiencies and manage key supplier relationships.

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Balance logo

B2B checkout platform

The first consumer-grade checkout experience for B2B. Offer buyers Net Terms, ACH/wire, check, CC, and installment methods - all in seconds.

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ScanPay logo

ScanPay is a payment app built for home service businesses.

Generate unlimited, professional invoices with ScanPay. Customize invoices, add job details, and track payments easily, all from your mobile device. Ideal for home service pros needing fast, organized billing without added costs or subscription fees.

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Die Agenturverwaltung logo

Project management and budgeting software for agencies

Die Agenturverwaltung is a project management software designed to help businesses generate cost estimates and manage accounting processes. Administrators can document employees’ working hours based on hours and weeks across multiple projects on a unified interface.

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JeraSoft logo

Multifunctional billing for telecom & IoT providers

JeraSoft is a multifunctional billing & routing solution for telecom & IoT providers to automate and streamline a variety of billing processes

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Alboom CRM logo

Customer relationship management (CRM) for small businesses

Alboom CRM is a customer relationship management system for small creative businesses. Alboom has been built to meet the needs of individuals and small businesses. Industry-leading features include one-click data view and update, business rules to control how your data flows, an activity dashboard, a contact database, and more.

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AtemisCloud logo

Full Business Management SaaS for service companies

AtemisCloud is an advanced Business Management SaaS platform with features covering customer management, marketing, HR, back office, administration, projects, and finance. Used in 60 countries by 1500 corporations and SNE for the last 23 years.

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Quipu logo

The invoicing and treasury software for freelancers and SMEs

Quipu is the all-in-one solution that allows you to control invoicing, treasury, taxes and customers in a simple and intuitive way.

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STEAMS ONLINE logo

Your complete system for registration, payments, and program

Steams Online is an all-in-one platform for managing class registrations, student records, payments, and communications. Ideal for training providers and schools, it streamlines operations with built-in SIS, billing, portals, and integrations like Zoom, Stripe, and Twilio.

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SAP Taulia logo

Invoicing, discounting & payments

Taulia is an online invoice, payment and discounting management application that serves large, global enterprises. It provides ways to automate supplier invoicing, payment processes,and more . It also provides a Supplier Management (SIM) system to store and manage supplier information.

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Recur360 logo

Cloud-based invoice and payment automation platform

Recur360 is a cloud-based recurring invoicing, payments and accounts receivable collections platform.

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Firmbee logo

All in one project management system.

All in one project management platform which manages your firm’s issues, finances, supports remote team work and HR processes.

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Siteline logo

Construction billing tool for contractors & subcontractors

Siteline is a construction billing solution that allows trade contractors to compile pay applications, manage billing, lien waivers, and more in one place. The features include pay app management, lien waiver management, vendor management, AR reporting, forecasting, change order tracking, compliance tracking, and integrations to streamline and visualize accounts receivable.

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SpendConsole logo

Redefine efficiency. Simplify and automate Accounts Payable.

Redefine efficiency with SpendConsole. Maximise time. Minimise manual efforts. Simplify and automate your Accounts Payable processes

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Wafeq logo

All-in-one accounting software for SMEs

Wafeq is a software application that makes it easy for businesses to manage invoicing, value-added tax (VAT), purchasing, payroll, employee expense claims, fixed assets, and other business-related activities. It is used by companies of all sizes, from small businesses to startups and everything in b

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BillingBee logo

Invoicing software for freelancers and small businesses

Billingbee is a cloud-based billing software that helps businesses streamline the invoicing, expense tracking, and payment management process. This automated solution generates professional invoices and delivers them to clients, allowing users to customize the invoice design to reflect their brand identity.

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Averiware logo

AVERIWARE: The Anytime, Anywhere Business Solution

Averiware cloud ERP software solutions helps organizations lower operational costs by providing real-time visibility into every business process. With accurate, up-to-date data, teams can make faster decisions, reduce manual work, and improve overall productivity across departments.

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STEL Order logo

Cloud-based ERP and field service management platform

STEL Order is a cloud-based ERP and field service management platform that helps businesses streamline key workflows like scheduling, dispatching, invoicing, expense tracking, inventory management, and more. End-to-end document traceability and a full history of interactions with each client.

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