Free and Open Source Invoicing, Expenses & Time-Tracking
A self-hosted open source application for managing your invoices
Free Desktop book-keeping software for small-businesses & freelancers
The ERP and CRM, multi language, for freelancers
Kimai is a web-based multi-user time-tracking application
Τιμολόγιο δαπάνης Ενόπλων Δυνάμεων
An open source project management platform
The Project Management plugin for WordPress
Stripe.net is a sync/async .NET 4.6.1+ client
Empower your hosting business with FOSSBilling
Laravel Cashier provides an expressive, fluent interface to Stripe
Free admin dashboard template based on Bootstrap 4
Open Source Metering and Usage Based Billing API
Open-source and free to self-host
Super simple PDF invoicing
PDF generation for Dutch UBL and SETU invoices
A library that can help you with generating PDF documents
Free offline invoice software for Windows and Linux
Telegram Bot API for NodeJS
An accounting program (not released) and a released invoice program.
Thousands of ready to use Apache OpenOffice templates
Timesheet module for dolibarr
Easy to use, modern and reliable POS solution.
Take your office and CRM into the cloud!
Simple Invoicing program for Desktop written in vba and Access