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Billing and Invoicing Software for Linux - Page 4

Last updated: February 2026

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259 software options

TrackTik logo

Security Workforce Management Software

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https://www.tracktik.com/back-office-suite/contracts-invoicing/

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HAL ERP logo

Making ERPs formless & natural

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HBS is a unique business system designed to help businesses manage and automate their key operations - Procurement, Sales, Inventory, Finance, HR, Manufacturing, Production, Quality control, and Compliance.
In addition, the simplified reporting tool makes it easy to pull out infinite custom reports

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AccountsPortal logo

Online accounting software for SMBs

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AccountsPortal is online accounting software that is easy to use, intuitive and flexible. Aimed at contractors, consultants, temporary workers, small companies, accountants and bookkeepers, there is no need to understand complex accounting or bookkeeping terms.

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Opsyte logo

The hospitality tool

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Opsyte is an online portal dedictated to optimising back of house tasks in any hospitality setting.

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Maestro Payment logo

Automated payments solution

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Maestro Payment is an easy to use, centralized, automated payments software for managing and paying contractors and freelancers globally. It saves 80% of payment processing time with powerful AP automation and reduces domestic and international wiring fees by 50-90% with its one-click payments module. Maestro Payment also prevents errors and financial loss using advanced AI and machine learning error detection.

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Synergy logo

Business and project management software for AEC businesses

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Synergy is the cloud-based software for efficient architecture, engineering, and construction design (AEC) business and project management. Enhance profitability by managing operations, jobs, and cash flow. Achieve efficiency, control, and profitability with Synergy.

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Axelor logo

Cloud-based ERP solution for small to midsize businesses

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Axelor is an open source ERP, CRM, and BPM platform powered by AI and Low Code. Modular and customizable, it combines business apps, workflows, analytics, portals, and 1,500+ connectors to help organizations build flexible, intelligent, and scalable management systems.

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Open logo

Banking and financial operations management platform

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Open is a cloud-based software designed to help startups and small to midsize enterprises manage payments, virtual accounts, cash, invoices, taxes, expenses, and more via a unified portal. The platform includes payroll management functionality, which enables businesses to track employees’ attendance and leaves, create payslips, and analyze reports for reference.

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TimeLive logo

Time and Expense Tracking for Project Management

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Billing Rate Setup,
Real Time Analysis,
Tax Option,
Logo and Footers,
Customized Report,
Multi Currency,
Billed/Unbilled,

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Revolut Business logo

Expedite your expenses with the all-in-one business account

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Revolut Business is designed to streamline your business operations. Scale — and save — with multi-currency accounts, company cards, spend management tools, seamless integrations, and more. Join the hundreds of thousands of businesses worldwide who use Revolut Business to expand with ease.

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Payaca logo

Simple, yet powerful, CRM solutions.

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A CRM solution for ambitious field service businesses. With a focus on simplicity and efficiency, we empower businesses to streamline operations, build strong customer relationships, and fuel growth. Developed by software experts, Payaca is designed for adaptability and continuous improvement.

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QT9 ERP logo

Cloud or on-premise enterprise resource planning software

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Billing & Invoicing software made easy. Automate the processes of producing & sending invoices & receiving payments with an easy-to-use cloud-based platform. Connect billing & invoicing to Quoting & Sales Management with email alerts, PO matching & FDA 21 CFR Part 11 compliant electronic approvals.

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pVerify logo

Patient eligibility verification for healthcare providers.

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pVerify is a cloud-based solution that helps healthcare organizations verify patient insurance eligibility on a centralized interface. The platform includes APIs and eligibility benefits verification that helps medical professionals verify prior authorization, claims status, and more. pVerify also offers batch eligibility solutions for medical, dental, and vision providers. Key features include real-time APIs, parsed benefits, EMR/PM integration, custom business rules, and more.

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Salesboom CRM Suite logo

Online CRM Software

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Salesboom CRM is an online CRM and customer retention software designed to manage your customer base and identify up-selling opportunities. Established in 2003, the Salesboom CRM system has been helping enterprises of all sizes coordinate their customer relationship management and cross/up-selling strategies as well as providing online training courses and support.

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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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Ottimate logo

Streamline your accounts payable process

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Plate IQ is accounts payable automation software that saves time, increases the accuracy of business data, and provides timely insights into their spend.

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Kefron AP - Accounts Payable logo

Processing 500+ invoices a month? Automate with Kefron AP

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Effortless invoice automation designed to transform AP teams from a 30+ day approvals process to a proactive, efficient process in 2 days

Read more about Kefron AP - Accounts Payable

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Axonaut logo

All-in-one business management for small teams.

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Create, send, and track professional invoices and quotes. Automate billing cycles and payment reminders to keep your cash flow healthy.

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Serrala Suite logo

Serrala – automate finance without limits!

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Serrala is a global finance automation company that creates more secure payment capabilities for organizations worldwide. We offer comprehensive order to cash, procure to pay, payments, treasury, and cash management solutions for multi-ERP and SAP-embedded deployments.

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Zigaflow logo

Make running & growing your business easier

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Zigaflow simplifies business management, offering automation, customization, and integration. Designed for diverse needs, it enhances efficiency, security, and growth across all operations.

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Orcatec logo

Cloud-based field service management software

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Orcatec is a cloud-based field service management software designed to help businesses handle and streamline various administrative processes, such as dispatching, employee management, and more. Supervisors can schedule appointments on a calendar and color-code them according to requirements.

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SoftCo AP Automation logo

Cloud-based AP automation solution

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SoftCo AP is a cloud-based AP Automation solution that reduces the cost of processing vendor invoices by 80%. It automates vendor invoicing processes including capture, registration, coding, approval, query, reporting, & ERP payment. SoftCo works with organizations who process 50k+ invoices p.a.

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HotelFriend logo

Hospitality operations platform for hotel management

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HotelFriend is an all-in-one operations management solution for hotels and vacation properties, with tools for managing bookings, accounting, housekeeping, departments, services, promotions, and more, including communication features and a mobile app for interacting with guests

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Aqilla logo

Cloud Accounting Software for Business

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A consistent approach to document tracking from invoice through to payment, credit checking, clear and flexible aged debtor reporting and many more.

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GetCost logo

Contractor estimate and invoice made easy

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Save time and look professional. Manage your business like a pro. Don't miss an opportunity to impress your clients!

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