Free and Open Source Invoicing, Expenses & Time-Tracking
Free Desktop book-keeping software for small-businesses & freelancers
Laravel Cashier provides an expressive, fluent interface to Stripe
Open Source Metering and Usage Based Billing API
Free & Open Source Invoice App for Freelancers & Small Businesses
Accounting system for smaller companies written in GnuCobol.
Order and Billing system for MSPs
Small Business Appliance
Audio Transcription software for Linux (Vlc) with a foot pedal
A super simple way to create & send invoices, receive payments online
Invoice and office utilities program for customer managment
The Open Source Invoice Management Software
Mutasyon is a script can add customer, products, inventory or invoice
Captures time & expense by project and account; generates invoice
A complete invoice managment solution for Elastix PBX
billing softwares
Intuitive quote, delivery note, invoice, payments management app
Free web-based invoicing primarily for Finnish companies