Best Tools Invoicing & Billing

Best Indie Invoicing & Billing Tools in 2026

Discover the best indie invoicing & billing tools built by independent developers. Focused functionality, fair pricing, and real human support.

30 tools · Updated daily · Browse full category →

🏆
Klirr Maker ✓

Zero-maintenance invoicing that generates beautiful invoices automatically

Invoicing & Billing
open-sourcerustinvoicing
🥈

🛒 litecart - shopping cart in 1 file with card and cryptocurrency payment support

Invoicing & Billing
open-sourceself-hostedsvelte
🥉

Docker Test Application - Shopping Cart Micro Service self hosted

Invoicing & Billing
c#dockeropen-source

A basic functional shopping cart for a self hosted online store. This uses React, Redux and Node.

Invoicing & Billing
javascriptopen-sourceself-hosted

SellSynapse - Self-hosted Telegram bot builder for e-commerce. Create stores with payments, product

Invoicing & Billing
open-sourceself-hosted

(VIN Parser) Self-Hosted NHTSA Product Information Catalog Vehicle Listing Client

Invoicing & Billing
c#cliopen-source

A lightweight, self-hosted inventory and business management app.

Invoicing & Billing
lightweightopen-sourceself-hosted

StockTrack is a lightweight, self-hosted inventory management system built with HTML, PHP, and SQLit

Invoicing & Billing
lightweightopen-sourcephp

Lightweight network IP scanner with web GUI - Real-time host discovery, inventory management, ELK/Gr

Invoicing & Billing
lightweightopen-sourcepython

CodeIgniter 4 Auto API Generator - Instantly create production-ready RESTful APIs from your database

Invoicing & Billing
apicligenerator

High-performance, resource-efficient Minecraft reverse proxy and library with robust multi-protocol

Invoicing & Billing
golightweightopen-source

Generate beautiful invoices from simple Typst or YAML data records

Invoicing & Billing
cligeneratoropen-source

PDF invoice generator for .NET Core. Create invoices easily, including example CLI.

Invoicing & Billing
c#cligenerator

A Python-based tool to generate professional invoices and quotations with PDF export, MySQL storage,

Invoicing & Billing
cligeneratoropen-source

Python tool to machine read shopping receipt from Lidl Switzerland

Invoicing & Billing
open-sourcepython

Open-source HR management software for growing teams.

Invoicing & Billing
hrpayrollopen-source

Open-source ERP with full HR and payroll modules.

Invoicing & Billing
hrerppayroll

Open-source HR management for small and medium enterprises.

Invoicing & Billing
hremployee-managementopen-source

Open-source accounting software for small businesses.

Invoicing & Billing
accountinginvoicingopen-source

Open-source ERP with accounting, inventory, and HR modules.

Invoicing & Billing
erpaccountinginventory

Open-source invoicing application for freelancers.

Invoicing & Billing
invoicingfreelanceropen-source

Open-source metering and usage-based billing.

Invoicing & Billing
billingusage-basedmetering

Open-source invoicing app for freelancers.

Invoicing & Billing
invoicingopen-sourceself-hosted
Invoice Ninja Maker ✓

Free invoicing, expenses, and time-tracking for freelancers

Invoicing & Billing
open-sourcefreelancersself-hosted

See your freelance income and workload before it happens

Invoicing & Billing
freelancersforecastingsolo-founder

Manage Factur-X and ZUGFeRD 2.0 PDF invoices in PHP

Invoicing & Billing
open-sourcephpinvoicing

Swiss QR Bill generation for Node.js and browsers

Invoicing & Billing
open-sourceinvoicingswiss

Library for creating European-compliant electronic invoices

Invoicing & Billing
open-sourcephpinvoicing

Simple invoicing REST API — send JSON, get a PDF

Invoicing & Billing
open-sourceapiinvoicing

Super simple PDF invoicing library for Ruby

Invoicing & Billing
open-sourcerubypdf