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Billing and Invoicing Software with API (2026) - Page 3

Last updated: March 2026

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576 software options

Patriot Accounting logo

Cloud-based accounting and payroll software

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Patriot Accounting is an online accounting solution that allows businesses to track and manage transactions, import bank transactions, reconcile accounts, send estimates & invoices & more.

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JobNimbus logo

Be more professional, profitable, efficient, and organized.

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JobNimbus is a contractor software platform that customizes to your business and grows with it. With full visibility of all your jobs and their stages, our platform makes it simple to control your workflow. You can manage your processes and keep every aspect of your business running!

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Agiled logo

Software for managing business operations

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Agiled is a cloud-based business management software designed to help businesses of all sizes manage invoicing, contracts, employees, finances, and other operations on a unified portal. Its project management capabilities allow organizations to handle tasks, project details, and team members using customizable templates, view, edit and share schedules with clients using Gantt Charts and create and assign tasks to teams.

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Replicon Time Tracking logo

Cloud-based project time tracking platform

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Replicon Time is a leading cloud-based project time tracking platform that helps mid-market and enterprise organizations manage time, projects, and workforce operations with accuracy and confidence.

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Bitrix24 logo

All in one business management workspace

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Bitrix24 is a free CRM that comes with unlimited free quotes and invoicing. Online payments (PayPal, Braintree, AuthorizeNet, Stripe, etc) are supported as well. Join 12 million businesses that use Bitrix24 free client management, time tracking, billing and invoicing platform.

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FieldPulse logo

Cloud-based field service management software

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FieldPulse is a cloud-based field service management software designed for service contractors that helps manage business operations and workflows, including customer management, scheduling, project management, estimates and invoices, timesheets, customer portals, and more.

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CosmoLex logo

Web-based legal practice management & accounting software

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CosmoLex legal timekeeping & billing software catches every billable item: meetings, tasks, even time on email & research. Get bills out in just one click.

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Payoneer logo

Send and receive money locally and internationally

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Payoneer is a cross-border payments platform available in over 200 countries and 150 currencies, with multiple payout options

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Holded logo

ERP, Accounting, Invoicing & more for freelancers and SMBs.

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It's a cloud-based invoicing software for freelancers, SMBs and accountant offices to control all aspects of their business and optimise their management.

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ActiveCollab logo

A productivity and collaboration workspace for teams

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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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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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Lightyear logo

Intelligent Purchasing & AP Automation Platform

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Lightyear is an intelligent purchasing & accounts payables automation solution that assist finance teams with automating approvals across different workflows using advanced data extraction, rule-based automation, customizable workflows, and built-in collaboration tools.

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Sage Intacct logo

Best-in-class Cloud ERP for Finance

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Ensure your purchasing team is able to place the right orders at the right time for the right price with Sage Intacct

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RepairDesk logo

Modern repair shop management software for repair shops.

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RepairDesk is an all-in-one repair shop management software which provides repair ticketing, inventory, customer relationship management (CRM), invoicing, payment processing, marketing, reporting, and more. The cloud-based point of sale (POS) platform is perfect for all sorts of repair businesses.

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Streamtime logo

Project & task management for creative teams and businesses

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Whether you're tracking time and materials, expenses, fixed rates or retainers, quoting and invoicing is quick and easy with Streamtime.

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Bill4Time logo
Category Leaders

Cloud-based billing and invoicing tool for law firms.

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Fast and easy client billing ensures that you aren't spending your valuable time doing back office work. With flexible billing methods with hourly and flat fee.

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RazorSync logo

Cloud and mobile-based field service management software

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RazorSync allows field technicians to create quotes, work orders, & invoices, capture signatures, update inventory & QuickBooks, all from the job site.

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Teampay logo

Request, approve, and track company spending in real-time.

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Teampay’s spend management platform gives finance teams control and automates the purchasing, reconciliation, and reporting process.

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Commusoft logo

Cloud-based job management software for field service

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Commusoft is a field service management software that streamlines operations for apartments, hotels, and offices. The tool helps manage admin work and provides automation, lead conversion, and profitability insights to drive growth.

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Canopy logo

Practice management software for accounting firms

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Canopy is a cloud-based practice management solution for accounting professionals. Streamline your firm and create a connected client experience using our suite of features including workflow, document management, time and billing, payments, a CRM with a secure client portal.

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Fieldd logo

Service your city faster.

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Fieldd is a cloud-based field service management software that uses AI (artificial intelligence) technology to help manage tasks, scheduling, dispatch, conversion tracking, online bookings, POS (point of sale), CRM (customer relationship management), and more.

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BILL Accounts Payable & Receivable logo

BILL, a leader in financial automation software for SMBs

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Keep track of all your bills and invoices online on any device, sync with all major accounting software. Business bill payments made easy with Bill.com

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Scoro logo

Manage projects, resources, and finances in a single system.

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Cover any billing scenario and automate invoicing with Scoro. Create recurring invoices, bill for time spent and cost incurred, or issue invoices for fixed-fee projects. Sync with your finance tools for accurate payment information and speedy cash collection.

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Refrens logo
Category Leaders

Business operating system sales, accounting, and inventory.

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Refrens is a business operating system that helps you with invoicing, accounting, bookkeeping, sales, inventory, client & vendor management, and other day-to-day business operations.

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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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