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Billing and Invoicing Software with API (2026) - Page 20

Last updated: April 2026

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600 software options

Saasu logo

Small business online accounting

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Online invoicing, customer invoice portal, recurring billing, recurring credit card charges with your gateway.

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Deltek Ajera logo

Project management solution for A&E industry

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Deltek Ajera is a project management solution that helps businesses streamline processes related to project accounting, scheduling, tracking, analytics, and more from within a centralized platform. It allows staff members to utilize earned value analysis tool to monitor project budgets and generate projections based on multiple criteria, such as job type, resources, departments, and project managers.

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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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Deltek Vantagepoint logo

Power project success

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Deltek Vantagepoint is a powerful, intuitive solution that helps people manage projects from start to finish. With full visibility of client, project and financial details, your organization accelerates workflows, maximizes productivity and realize great business results.

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ServiceWorks logo

All In One. Effortless. Accessible. Cloud Based Solution

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Smart and Automated Invoicing saves you time. Send individual invoice or combined invoices or statements. ServiceWorks have that covered.

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Acumen logo

Everything you need for an exceptional point of sale system

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Acumen is an accounting software that helps enterprises manage and streamline accounting operations on a centralized platform. It enables organizations to perform in-depth reporting and data analysis, facilitating business operations.

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TeamSystem Enterprise logo

ERP platform for small to midsize businesses

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TeamSystem Enterprise is an enterprise resource planning (ERP) platform that optimizes and helps small to midsize businesses streamline workflows through guided configuration, centralized updates, and data security.

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Webgility logo

Eliminate busywork and sell more in more places.

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Webgility is flexible, powerful ecommerce automation software that connects your ecommerce apps to your accounting solution. Connect your QuickBooks account to ecommerce stores, marketplaces, and point-of-sale systems — no IT necessary. Automation syncs ecommerce and accounting data automatically.

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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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CloudBooks logo

Send Invoices, Estimates, log Expenses, track Time

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CloudBooks enables small businesses and freelancers to send professional invoices, automate payment reminders, manage projects, track time, log expenses, accept payments online and much more,

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Contasimple logo

Billing and invoicing solution

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Contasimple is a cloud-based billing and invoicing solution designed for freelancers, small businesses, and accounting firms. The platform streamlines accounting processes by enabling users to create and send professional invoices from any device while ensuring compliance with electronic invoicing regulations including Verifactu standards. The system maintains complete traceability of all transactions and automatically submits required documentation to tax authorities.

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Mollie logo

Cloud-based payment processing software

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Mollie is a payment and financial solutions platform that simplifies transactions for businesses of all sizes. Its solutions cover online and in-person payments, recurring billing, fraud prevention, and financial services, all accessible through a centralized dashboard.

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Worldline logo

Software for enabling cashless payments.

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Worldline is a point-of-sale solution relevant for various companies, such as those in the retail or hospitality sectors. The central function is the provision of cashless payments. The solution is available in different versions, for example as a fixed or mobile terminal.

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cleverbridge logo

Cloud-based eCommerce and recurring billing platform

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cleverbridge is a cloud-based eCommerce platform designed to help businesses of all sizes streamline billing, marketing, customer management, and payment processing operations. The application allows enterprises to convert leads into customers, enhance retention rates, and ensure compliance with industry regulations.

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RevX logo

Managed Wireless Data Plans for the Internet of Things

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Application service providers can now easily connect, manage, and bill subscribers for LTE / NB-IoT / CAT-M1 devices, apps, and services on Verizon, AT&T, T-Mobile, and Vodafone networks.

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Corenio logo

"Corenio: Streamlining SME Operations Effortlessly"

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Elevate your SME with Corenio: A comprehensive suite for seamless order, inventory, and shipping management. Optimize operations, boost efficiency, and drive growth. Discover the power of integration and scalability. Transform your business with Corenio today!

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Raseed logo

Raseed: Smart Billing for a More Organized Business Flow

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Raseed offers powerful billing and invoicing software for businesses. Create GST-compliant invoices, manage accounts, track inventory & boost sales with ease.

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Billomat logo

Accounting software and invoicing program

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With Bil­lo­mat even non-accountants can take care of all their own invoice pro­ces­sing effort­lessly – inclu­ding cust­o­mer manage­ment, estimates, invoices and remin­ders. Stress-free and secure!

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Timegate logo

Software for managing recruitment process

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Timegate helps hire and retain talent
Timegate helps reduce costs and increase compliance
Timegate enables you to win more business and retain clients
Timegate connects and mobilises your entire workforce

Combine scheduling, payroll, compliance and employee engagement essentials in one platform

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ZYFRO logo

Online invoicing software for freelancers & SMBs

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Zyfro is an online invoicing software with a friendly user interface dedicated to freelancers, SMEs and bookkeepers, designed to simplify administrative tasks

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JustPaid logo
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AI-powered financial automation platform

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JustPaid is an AI automated software solution that streamlines contracts to invoicing, bill payment, and revenue operations.

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HelloBooks logo
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AI bookkeeping software for small businesses

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HelloBooks is AI-powered bookkeeping software designed for small and medium-sized businesses. The platform offers automated transaction categorization, bank reconciliation, and financial reporting capabilities. It integrates with accounting systems including Tally and QuickBooks USA, with additional integrations planned for Xero, Zoho Books, NetSuite, and payment platforms like Stripe and PayPal.

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Kolmisoft M4 SBC logo
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Telephony and VoIP software

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Kolmisoft M4 SBC is a VoIP solution that helps telecommunication service providers automate VoIP billing, routing, and invoicing processes. Key features include real-time billing for both prepaid and postpaid services, multicurrency support, VAT accounting, and comprehensive financial analysis tools.

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Ain Finance logo
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Accounting and finance management solution

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AIN Finance is an accounting and finance management solution with accountants designed to support startups, SMEs, and growing businesses that need reliable financial expertise without the overhead of an in-house finance team.

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Gem Logic logo
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Gem Logic, jewelery business software

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Gem Logic offers cloud-based software for jewelers, creators, gem traders, goldsmiths, and workshops. It provides comprehensive management of stock, orders, invoicing, POS, repairs, certificates, CRM, and more.

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