This is a framework for generating and displaying invoices (ideal for commercial Rails apps). It allows for flexible business logic; provides tools for tax handling, commission calculation etc. It aims to be both developer-friendly and accountant-friendly. The Ruby Invoicing Framework is based on {ActiveRecord}[http://api.rubyonrails.org/classes/ActiveRecord/Base.html]. Please see {the website}[http://ept.github.com/invoicing/] for an introduction to using Invoicing, and check the {API reference}[http://invoicing.rubyforge.org/doc/] for in-depth details.

Super simple and fast PDF invoicing in pure Ruby (based on Prawn library).

Invoicing API Ruby Gem

ErpInvoicing adds models and services to the CompassAE core to handle invoicing and billing functions. It includes extensions to the core ERP classes for accounts and things that are 'billable' (products, work efforts), and additional models for the invoices/items, payments and the application of payments to invoices or invoice items. It also includes application hooks to make it easy to add electronic bill pay functionality to Web applications.

This gem gives integration with polish on-line invoicing service: http://fakturownia.pl

[Deprecated] The PayPal Invoice SDK provides Ruby APIs to create and manage Invoices using the PayPal's Invoicing Service API.

This gem is a ruby implementation of the Netvisor invoicing API

Invoiced makes invoicing and recurring billing dead simple

Ruby API for invoicing service fakturownia.pl

Ruby client for web based invoicing service www.fakturoid.cz

gem to consume the api of our invoicing tool https://skippr.com

Leverages the invoicing API in order to seamlessly accept bitcoin denominated payments

Simple ruby client to Debitoor invoicing software api

Rails Engine for single-entry invoicing.

invoicing tools

A simple command line tool and library for enterprise management. It can currently handle invoicing, expenses, reporting, and is very extensible.

A full-featured, rails-based system for basic accounting, with a particular focus on invoicing and automatic bill generation.

This is a framework for generating and displaying invoices (ideal for commercial Rails apps). It allows for flexible business logic; provides tools for tax handling, commission calculation etc. It aims to be both developer-friendly and accountant-friendly.

THIS GEM IS STILL IN DEVELOPMENT STAGE. Find documentation here: https://github.com/leandrosardi/invoicing_payments_processing.

A simple gem that enables to communicate with toggl API. Main Purpose is to receive items for invoicing.