free billing tool - AI tools

Invomaker is a user-friendly, free online invoice generator that enables freelancers and small business owners to create, customize, and download professional invoices within seconds, with no registration required.

• Free

Flexprice is an open-source platform empowering developers to implement usage-based, credit-based, or hybrid pricing models by handling metering, pricing, and invoicing seamlessly.

• Contact for Pricing

ReBilling streamlines invoicing and recurring billing, empowering freelancers and companies to automate payment processes, manage clients, and receive payments faster through a user-friendly cloud platform.

• Freemium
• From 2$

UniBee is an open-source subscription billing and payment management platform that helps SaaS businesses optimize their finances through automated billing, multiple payment gateway support, and AI-powered analytics.

• Freemium

BillRun is an open-source, modular business support and billing solution designed for telecom operators, digital businesses, and IoT providers, offering scalable monetization, CRM, and customer portal capabilities.

• Usage Based

InvoiceMaker Pro is a free online invoice generator offering over 100 customizable templates, allowing users to quickly create, download, and send professional invoices in PDF format without registration.

• Free

PlainInvoice enables users to generate professional invoices within seconds, offering a simple, no-sign-up-required and completely free solution for invoicing needs.

• Free

BillingBee is an AI-powered cloud-based invoicing solution designed for freelancers and small businesses, enabling effortless invoice creation, automated payment reminders, and streamlined financial management.

• Freemium
• From 5$

OpenMeter offers scalable, real-time usage metering designed for developers to implement usage-based billing quickly and gain revenue insights.

• Freemium
• From 349$

Invoice & Estimate with Alto streamlines invoicing, payments, and time tracking for freelancers, contractors, and small companies—available on iPhone and iPad.

• Freemium
• From 13$

Zintego provides an easy-to-use online platform for creating, customizing, and sending professional invoices and estimates, helping businesses and freelancers get paid faster.

• Freemium
• From 7$

Bunny is an AI-driven billing and revenue operations platform designed for B2B SaaS, integrating quoting, invoicing, analytics, revenue recognition, and more into a single, easy-to-use solution.

• Freemium

EZInvoiceHub streamlines invoice creation, sending, and tracking, enabling freelancers and small businesses to manage their invoicing tasks quickly and professionally.

• Pay Once

Koteshen is a streamlined invoicing platform designed for businesses and freelancers, offering automated billing, customizable templates, and intelligent payment tracking features.

• Freemium

InvoicePages streamlines invoicing for individuals and small businesses by offering automated, customizable invoice generation and customer self-service through reusable links.

• Usage Based

Billclap is a comprehensive cloud-based billing and business management platform tailored for Indian businesses, offering GST compliance, inventory management, invoicing, and e-commerce capabilities with zero commission on sales.

• Contact for Pricing

CalendarCrush automates invoicing by transforming calendar events into accurate project bills, streamlining billing for freelancers, consultants, and teams.

• Freemium
• From 30$

InvoicePDF is an efficient invoicing tool designed for freelancers and small businesses to create and manage professional invoices in seconds without the need for an account or design expertise.

• Pay Once

Props offers advanced cost monitoring and metered billing solutions specifically designed for AI companies to manage and monetize their AI applications efficiently.

• Freemium
• From 47$
• API

Akaunting is an open-source accounting software designed for small businesses and freelancers, offering invoicing, expense tracking, and comprehensive financial management tools online for free.

• Freemium
• From 8$

Invoicer Studio offers intuitive and customizable invoice creation with editable templates and fast PDF export, streamlining billing for professionals and businesses.

• Free