Konik provides an easy way to create, read, and validate ZUGFeRD invoices. It features an easy and understandable API, extensive documentation with examples, logical invoice validation with JSR303, validation of invoices against ZUGFeRD profiles, validation of invoices against specific country invoice regulations, easy invoice appending or extracting in and from PDFs, and multiple PDF Carriages from different vendors.
todoyu is a powerful project and task management system. The core features are project handling, time tracking, time sheets, resource management, calendar, customizable reporting, keeping track of communication and decisions, invoicing directly from tracked time, and address management of customers and employees. It improves billing accuracy and timeliness, and removes risk from the billing process. A todoyu customer's clients get visibility into the project work done on their behalf. The system is extensible with additional modules. The system is completely Web based and translated in 12 languages.
MEVEO is a billing system for mediation, rating, invoicing, payment, dunning, and composition. It is adapted to the following situations: batch processing of thousands of invoices per month (or much more), complex price plans, real time rating, and re-rating, automatic provisionning through an API, multi-format CDRs, and pre/post-invoicing reports.
NeoBill is a Web-based customer management and billing solution designed for Web hosting providers, particularly hosting resellers. It can create invoices, manage domains, and provides other services. It has an API for CPanel and for Domain Registrare for automatic domain registration.
NixBill Automation provides many features to manage your Web hosting business. It provides hosting modules, domain modules, payment modules, and encryption modules. Its encryption modules use a unique solution for credit card data storage, which can use AES methods or others, such as PGP. You can create as many encryption modules as you like to store different sets of credit card data differently.