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.

Online Accounting Software

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

Kimai is the #1 open-source time-tracking application. From freelancers to companies and organisations - everyone can manage timesheets, generate reports, create invoices and so much more... Web-based multi-user application, available as On-Premise or SaaS version: https://www.kimai.org

A Laravel and Filament-powered accounting platform featuring full double-entry accrual accounting, delivering modern automation for professional financial management.

All in One PSA for MSPs, which Unifies client, contact, vendor, asset, license, domain, ssl certificate, password, documentation, file, network and location management with ticketing and billing capabilities, with a client portal on the side.

Simple and elegant invoicing solution.

Ubilling is an open-source billing system designed for Internet service providers (ISPs). It provides tools for managing subscribers, handling payments and creating detailed reports. Ubilling allows control and monitoring of a wide range of network equipment and can be easily extended with custom functionality.

Sell-Your-Saas is an Open Source solution to automate and sell any Web application as a SaaS service. Solution supports the deployment/undeployment of any application, customer dashboard, automatic invoicing and payment (credit card or sepa direct debit), management of a reseller network, security, backup, supervision and more...

Easy and lean invoicing for small businesses, consultants and freelancers, created using AppGini

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

Library for reading and creating European-compliant electronic invoices (EN 16931)

OpenXE - Free Open Source ERP based on Xentral

BillingTrack quote, invoice, workorder management

📝 PDF invoice generator

GetPaid (Formerly the Invoicing plugin) is a lightweight Payments and Invoicing system for WordPress. It can be used to sell anything online via payment forms or buy now buttons that can be added to any landing page. It can also be used by freelancers to manage their Invoices or by 3rd party Themes and Plugins as their payment system. GeoDirecto…

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

Magento 2 procedure to automatically invoice orders in a given status.

BillingTrack quote, invoice, workorder management

💸BiznisBox is the all-in-one business platform that helps you manage your business, from invoicing to contracts, and more