Invoicing & Billing

Discover 86+ indie Invoicing & Billing tools built by independent makers. Open-source and bootstrapped alternatives with install commands and compatibility data.

OpenCart

Shopping cart solution

Payments
ecommercephpopen-source
Visit →
Kill Bill

Open-source subscription billing platform.

Payments
billingsubscriptionsopen-source
Visit → 4 AI recommendations
Invoiceninja

A source-available invoice, quote, project and time-tracking app built with Laravel

Payments
einvoicingexpensesflutter
Visit → 9601★
ERPSaaS

Laravel and Filament-powered accounting with full double-entry accrual

CRM & Sales
open-sourcelaravelaccounting
Visit → 1395★
Invobook

Self-hosted app for Time Tracking, Invoice Generation, Project & Client Management, built with Larav

Invoicing & Billing
client-managementfilamentfilamentadmin
Visit → 2229★
Easy Invoice Pdf

Free & Open-Source Invoice Generator – Live PDF Preview, No Sign-Up, 100% In-Browser. Includes a Str

Payments
expensesinvoiceinvoice-generator
Visit → 548★
Admin Portal

Invoice Ninja: Desktop/mobile admin portal built with Flutter

Project Management
androidflutterinvoice
Visit → 1731★
V

Simple, fast, safe, compiled language for developing maintainable software. Compiles itself in <1s w

Developer Tools
compilerlanguageprogramming-language
Visit → 37472★
Itflow

All in One PSA for MSPs, which Unifies client, contact, vendor, asset, license, domain, ssl certific

CRM & Sales
accountingasset-lifecycleasset-management
Visit → 914★
Hledger

Robust, fast, intuitive plain text accounting tool with CLI, TUI and web interfaces.

Invoicing & Billing
accountingcommand-line-toolconsole-application
Visit → 4374★
SolidInvoice

Simple and elegant open-source invoicing solution

Payments
invoicingbillingfreelancer
Visit →
Ever Gauzy

Ever® Gauzy™ - Open Business Management Platform (ERP/CRM/HRM/ATS/PM) - https://gauzy.co

CRM & Sales
accountingbillingbookkeeping
Visit → 3602★
Compare tools: Klirr vs Invoice Printer · Invoice Printer vs Invoice as a Service · Invoice as a Service vs SwissQR Bill