Free and Online Accounting Software

Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.

Open Source Metering and Usage Based Billing

Kimai is a web-based multi-user time-tracking application. Works great for everyone: freelancers, companies, organizations - everyone can track their times, generate reports, create invoices and do so much more. SaaS version available at https://www.kimai.cloud

A self-hosted open source application for managing your invoices, clients and payments.

Free Accounting Software

Ever® Gauzy™ - Open-Source Business Management Platform (ERP/CRM/HRM)

Simple and elegant invoicing solution.

Free and open-source web application for MSPs that streamlines IT documentation, ticketing, invoicing, and accounting, an alternative to ITGlue. It helps in managing and organizing client's IT information, increasing efficiency and profitability.

Double-entry accounting & ERP for the web

Invoicing for freelancers & small businesses

Online Invoice Management in Ruby On Rails.

An Open Sourced Invoice System developed for anyone who needs to generate out an invoice and manage clients

Fab-Manager is the FabLab management solution. It provides a comprehensive, web-based, open-source tool to simplify your administrative tasks and your marker's projects.

Sell-Your-Saas is an Open Source solution to automate and sell any Web application as a SaaS service

Cashierstream is a simple Spark alternative written for Laravel Jetstream, with the super-power of tracking plan quotas, like seats or projects number on a per-plan basis

Desktop invoicing app built with electron. Create Quotes and Invoices. Download PDF or Email directly to your customers.

Miru | Time Tracking and Invoicing and Employee Benefits. Built using Ruby On Rails and ReactJS

Akpoho Invoicing Software is an open-source software which provides quotation, invoicing, and receipt functionalities for small businesses.

C# assembly for creating and reading ZUGFeRD invoices