Summit is a modern, self-hostable invoicing and financial management application designed for freelancers, small businesses, and agencies. Create professional invoices, track expenses, generate financial reports, and more.

BILLmanager is described as 'Highly customizable billing software for hosting and IaaS business with the full scope of functionality for billing, service provisioning, client management & support' and is a popular Billing System in the business & commerce category. There are more than 50 alternatives to BILLmanager, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and iPhone apps. The best BILLmanager alternative is Summit Finance, which is both free and Open Source. Other great sites and apps similar to BILLmanager are Autumn, Invoice Ninja, FreshBooks and Manager.
Summit is a modern, self-hostable invoicing and financial management application designed for freelancers, small businesses, and agencies. Create professional invoices, track expenses, generate financial reports, and more.

Autumn is an open-source layer between Stripe and your application, allowing you to create any pricing model and embed it with a couple lines of code. On Autumn you can build:


Free, open-source invoicing and billing platform providing PDF invoice generation, client payment options through 30+ gateways, multiple templates, company logo addition, team roles, time tracking, advanced customization through paid plans, and no installation required.




Comprehensive cloud accounting for small businesses and freelancers; save time billing clients by sending, tracking, and collecting payments swiftly. Generate professional invoices, manage expenses effortlessly, track project time seamlessly, and prepare for tax with ease.




Manager is free accounting software for Windows, Mac and Linux.
It features an intuitive and innovative user interface with modules such as cashbook, invoicing, receivables, payables, taxes and comprehensive financial reports.
The desktop edition is free while the cloud edition.



WHMCS is an all-in-one billing and automation platform that automates all aspects of a web hosting business from signup and payment processing, service provisioning, domain registration and customer support.




A comprehensive invoicing platform offering customizable templates, tax compliance, fraud protection, and client portal. Supports software integration, online estimates, GST invoicing, recurring billing, credit management, and global operations with multilingual and multicurrency support.




Cloud-based accounting software designed for small businesses, featuring invoicing, expense and income tracking, customizable financial dashboards, extensive reporting, automation for recurring tasks and payment reminders, secure user access controls, and integrated templates.




Ubersmith is a global leader in billing, infrastructure and help desk software and services for the cloud. Hundreds of organizations rely on Ubersmith to better serve their customers, increase revenue and lower costs.




HostBill is a powerful and flexible, all-in-one automation, billing, client management and support platform for online businesses.




Kill Bill can fulfill the billing and payment needs of nearly any online business. Reliable and robust, it has proven itself over time with even the largest SaaS and e-commerce organizations.

Bill.com is an AI-driven platform designed to streamline financial operations. This comprehensive solution offers a range of features, including bill creation and payment, invoice sending, expense management, budget control, and access to credit for business growth.

