Best Billing and Invoicing Software for Linux of 2025

My Member Software is a frontend user-friendly member administration software that is open source and downloadable. Associations, Clubs and Foundations can manage their members. It is integrated into the CMS Joomla, but can also be used alongside a Wordpress and Drupal website. You can manage your members from anywhere, at any time. For a hassle-free setup, you can choose to have it done by yourself or with us. We are also interested in partnerships with webdesigners and accounting firms.

Odoo is an open-source, fully customizable and extensible software that includes hundreds of professionally designed business applications. Odoo's intuitive database can meet most business needs including CRM, Sales, Projects, Manufacturing, Inventory, Accounting, and Accounting. Odoo is a software solution that can be used to meet all company needs, regardless of size or budget. Odoo's seamless design makes it easy for businesses to become more efficient and save time. Each module is interconnected to offer a seamless experience from one app to the next. Users can automate many tasks that would otherwise require manual inputs to multiple applications. Odoo enables teams to collaborate with each other from one platform, allowing them to keep all business functions in one place.

Zahara's cloud-based platform automates budget management and suppliers. It also allows for multi-level purchase approvals, delivery approvals, and invoice reconciliation and approvals. Zahara integrates seamlessly with the most popular accounting software, such as QuickBooks Online or Xero, to provide expanding SME's with real-time visibility and central control over their purchasing. Zahara can be used for controlling spend within an organization. We can take the initial request to purchase something and automate the approval and sending the PO to the Vendor. Deliveries can be received, invoices from vendors matched and processed before being exported to finance. Zahara increases control and speeds up processing.

CrossConcept Continuum is more than traditional PSA solutions. It incorporates cutting-edge UI technology, making it easier to use the solution. This reduces clicks and time spent logging data. CrossConcept Continuum integrates with all major accounting systems, allowing you to seamlessly synchronize your accounting and projects within one unified system. Our innovative PSA solution allows organizations maximize profitability by integrating financial accounting and connecting projects. This allows you to manage all stages and deliver on your promises, from conception to completion. CrossConcept has decades experience in helping service companies automate their processes. CrossConcept has worked with clients ranging in size from a few people to more than thirty thousand. CrossConcept Continuum was born out of real-world experience by the founder and his team. Our solution is a simple but powerful PSA!

MyEnroll360 delivers a smooth and intuitive end-to-end user experience for both employers and employees through modern functionality and a fully integrated system.   For administrators, the MyEnroll360 platform empowers easy, effective HR and benefits management. Easy to configure tools enable you to control employee information, track benefit allocation, manage new hires, and more, while a hands-on support team assists with all your administrative needs. Designed for all user levels, MyEnroll360 facilitates a painless enrollment process for employees and includes 24x7 access to an intuitive self-service employee portal with consolidated benefits and cost information – all supported by our customer support team. MyEnroll360 eliminates the need for multiple systems, resolves data discrepancies, and renders manual intervention obsolete. With rules-based eligibility controls and a unified database for all services, MyEnroll360 automates accurate transactions and compliance. Backed by in-house software development experts, MyEnroll360 is continually updated to support changing regulations and operational and underwriting requirements. MyEnroll360’s scalable, agile technology platform supports clients of all sizes.

The CRM Firmao software will allow you to create a customer database which will allow you to reduce the time it takes to acquire customers, increase conversions at all stages of the sales process, and efficiently and comprehensively service your existing customers. Firmao is a tool that helps to manage the sales department's work, including the sales funnel. It also acts as a contact centre for customers who are regular customers of the company. Simple management of your customer base Multiple Opportunities - - Automating the sales process - Increasing sales volume - Effective contact with customers - Comprehensive customer service - Execution orders for customers It is used in companies that require regular contact with leads and contractors. Firmao's CRM software can be used to plan dynamic development. Firmao's CRM software is simple and fast to implement. It takes approximately 1-2 weeks.

OneBill is an integrated subscription management, billing and revenue management platform that powers customer lead-to-revenue generation. OneBill supports all types billing models, including subscription billing, usage-based billing, one-time billing, and subscription billing. Open APIs make OneBill easy to integrate with other enterprise systems, such as payment gateways, carriers & service providers and accounting & admin. The platform covers all aspects a business, including CPQ, automated order activation, billing & Invoicing, billing & invoicing, revenue reporting, customer subscription management and channel partner commission management. OneBill is a revenue management and billing solution that integrates with the most trusted solutions in the world. It has helped SMBs, SMEs and large enterprises reduce billing errors, compliance risks, and drive greater efficiency.

Are you looking to increase your sales? Do you want to improve customer relationships? Are you interested in contributing to the fastest-growing open source project on GitHub YetiForce is completely free to use. You can manage 12 business processes within your company with YetiForce's assistance, regardless of its size. YetiForce's open-source code was released under a flexible and generous license. This has created a large and active community for the project. It doesn't matter if your profession is in programming or if you just enjoy software development. Get YetiForce free of cost and discover why more than 250 000 people already use it.

Simplain Vendor Portal is used by some of the leading retailers in the world to streamline their supplier collaboration. By implementing the solution, retailers and wholesalers can realize immediate gains in productivity, speed to market and establish a solid foundation for other digital transformation initiatives. The platform helps facilitate workflow driven collaboration / negotiation with suppliers for key business processes such as Vendor Onboarding, Item Management, Cost management, Deals & Promotions management, Purchase Order Management & Invoice Management. Simplain Vendor Portal is capable of integrating with GDSN providers to synchronize item attributes, nutritional and product certifications and digital assets. The system also provides REST APIs for bidirectional communication with the back end ERP systems. By making the suppliers accountable for their own data, Vendor Portal helps retailers achieve better data quality and gather richer data.

1CRM is a highly customizable All-in-One CRM built for comprehensive management of small-to-medium businesses. Its core strength is the integration of order management (quotes, invoices, product catalog, purchase orders, inventory tracking and more), customer service and project management within a unified CRM framework.

Plus & Minus, an integrated enterprise resource planning (ERP), financial platform, is built around a single file system. Plus & Minus offers collaborative tools for accounting and purchasing, managing sales, reporting operations, and other functions. Plus & Minus allows users to track sales, manage core finance operations, create custom business reports, and monitor documents. Plus & Minus allows users to deploy on-premises or in the cloud.

Perfect Billing System is a billing and customer management system for businesses. It simplifies the creation of invoices and the dispatch of them, and facilitates tracking payments efficiently. It also provides comprehensive financial reports. The system is also flexible, supporting multiple payment methods and currency adjustment. The system's features are designed to reduce errors and improve financial accountability. It also enhances business operations by providing detailed expense tracking and real time financial oversight.

Clockify is the the most popular free time tracker for teams, used by millions around the world. Clockify is a time tracker and timesheet app that lets you track work hours across projects. Unlimited users, free forever. Clockify makes it simple to track employee hours, create staff work schedules, see everyone's availability, make adjustments when allocating tasks, and control costs and overall budgets.

QuickBooks Online is the most widely used accounting software in the entire world. QuickBooks Online simplifies accounting. Accounting software for small businesses that is #1 makes it easy to track receipts, income, transactions and more. You can take photos of receipts to link them with expenses. Our agents are available to answer any questions you may have about QuickBooks. Keep your business running smoothly by using the apps that you love. QuickBooks Online is compatible with PCs, Macs, tablets and phones. Click the link to get a 30-day free trial, and 50% off for your first three months. QuickBooks is more than just accounting software. QuickBooks helps you keep track of your income and expenses so that you can prepare for taxes. Customers save an average of $3,534 per year. Need more help? QuickBooks Live helps you to stay organized and ready for tax season. QuickBooks Mobile is a mobile application that helps you run your business anywhere, anytime.

Take productivity to new heights with Hubstaff! Hubstaff offers time-tracking apps for your desktop, web browser, or mobile device. Once you start tracking time to a task, Hubstaff will quietly run in the background as you work, consuming virtually no resources. You can easily switch between tasks or stop tracking with just a few clicks. Tracking your team's efficiency can be a challenge, but we've equipped Hubstaff with several great features to help you determine how they perform. Hubstaff works best when you have clear expectations for your team. It helps you determine each team member's average productivity levels to identify improvements or declines in their performance over time. In other words, the more you use Hubstaff, the better the results you'll get. Available for Mac, Windows, Linux, iOS & Android.

Our cloud-based mailroom allows you to send documents remotely directly to the U.S. Post Office. DocuSend can be used with any accounting, billing, or CRM software that creates PDF documents that contain a valid mailing address. Developers can integrate our REST API into their software to provide a "Send mail" button. This can be used as a reseller option or internal direct connectivity. Any business or organization that needs to print and mail documents on demand can reap the enormous economic benefits. QuickBooks Online users get 33% off first DocuSend upload. See website for details.

A web-based software application that is tailored to the client's specific needs. Our services are simple to use and easy to implement. It takes only minutes for a company or individual to use our services. We understand how valuable your time is and have created a turnkey service that will help your business grow. Talygen is simple to use, access, and implement. Talygen allows clients to track and manage their projects, employee progress and performance, profitability reports, and many other things. Talygen offers an easy-to-use online portal, a desktop application with screenshot functionality, and a mobile application tracking system that can be accessed via your Android Smartphone, iPhone, Windows Phone, or Windows Phone. There is finally an online tool that allows businesses, employees, contractors, and everyone else to track their expenses. The key to running a successful business is expense tracking.

iM3SCM Suite is a cloud-based suite of tools that digitally transform the supply chain of an enterprise. It automates Warehouse, Distribution Center & 3PL Operations, multichannel order management, and warehouse, distribution center & 3PL operations. We have the expertise to choose technologies from Mobile Computers Scanners & Barcode Readers, Automated Guided Vehicles. API integrations into Shipping (Fedex UPS, USPS LTL), fleet manager Accounting Software Quickbooks Online/Desktop SAGE, Fedex, UPS, USPS LTL), and shipping (Fedex UPS, USPS LTL), Digitally Transform your Asset & Facilities. Repair management, Dealer and Distribution Management, Field Service & Fleet Management Yard Management Rental Management of Assets Track Technician, Time & Labor and many more. iM3 SCM Suite comes with Mobile Apps (phones/tablets), which allow you to manage different functions of your operations either in-house or remotely. To improve productivity, efficiency, quality and reduce costs, choose the best technology for you enterprise.

Finally is an all-in-one accounting platform that blends advanced AI-powered software with hands-on expert support to streamline your business finances. Built for small and medium-sized businesses, Finally offer solutions for bookkeeping, taxes, payroll, expense tracking, and corporate credit cards, along with expert support to help you stay on top of your finances. We simplify financial management, helping you stay organized, save time, and avoid unnecessary IRS penalties. With Finally, you get both cutting-edge technology and personalized service, so you can focus on scaling your business stress-free.

InvoiceTemple was designed specifically for small business owners. Our app provides a user-friendly platform that allows entrepreneurs to create professional invoices with ease. InvoiceTemple offers a variety of features that make invoicing easy and efficient for even the most tech-savvy users. InvoiceTemple gives you access to a variety of customizable templates that allow you to customize your invoices to include your logo, your business details, and your unique scheme. This level of customization not only enhances professionalism, but also strengthens brand identity and instills confidence in your customers and clients. Invoice Temple also seamlessly integrates purchase orders and purchase records. This eliminates the need for manual data input and ensures accuracy in your financial records.

Paymo is a collaborative work management software that allows small and mid-size teams and individuals to get their job done wherever they are. The software bundles advanced task management, resource scheduling, native time tracking, and invoicing under a single platform - eliminating the need for any messy and costly integrations.

PaidYET makes B2B payments simple for software companies. Tailored for SaaS, marketplaces, and software platforms, our solution integrates effortlessly, streamlining payment processes and minimizing friction. With PaidYET, you can optimize transactions and unlock growth opportunities with ease. Keep your payments running smoothly by integrating our gateway today.

Paddle is a subscription commerce platform and billing platform for Software- and SaaS-based companies. It is more difficult than ever for customers to keep up, to find international growth opportunities, or to effectively manage your internal resources. Paddle allows you to focus on scaling your business, rather than spending time fixing internal roadblocks. Paddle offers a complete suite of tools, including optimized checkout to sell your product, recurring billing, fraud detection and manual invoicing. It also includes sales taxes, global currencies, customer service, analytics, and more.

Online Invoicing and Billing for B2B Service Providers VatPay's billing software will manage your entire billing process, allowing you to create and send your invoices faster than any other platform. Online invoicing and time tracking have never been easier. VatPay is a powerful tool that will allow you to organize your business from one place. Track time, manage projects, and convert actual work hours into invoices. VatPay supports serveral payments gateways such as Authorize.Net, Stripe and PayPal. To help you make business decisions, track your expenses and generate intuitive financial reports.

TimeStatement AG develops innovative web-based time-tracking solutions. - Zeiterfassung The TimeStatement online is simple to use, reduces administrative effort/costs, and can be accessed from anywhere. Free of charge, a version is available for freelancers or 1-man businesses. Two parallel projects and one user access are available. Here is the free full version https://timestatement.com/pricing Our time-tracking solution is perfect for small to large businesses as well as freelancers who are looking for an intuitive and fast way to track time and tasks. The cloud-based TimeStatement solution makes it easy to download and upload your timesheets or professional invoices anywhere you are. They are also available for editing and entering. TimeStatement is now part of "Swisscom FinTech Startup" because of the new technologies: http://fintechnews.ch/fintech/swiss-fintech-startup-map-for-january/24699/