NUKERN!

BILLmanager is a linux-based control panel for automating client management, invoicing and billing. This software specifically developed for hosting service providers will help you manage and take complete control of various aspects of your business:

WHMCS is an all-in-one client management, billing & support system for online businesses. WHMCS handles everything from signup to termination, with automated billing, provisioning & management. With WHMCS, you're in control with a very powerful business automation tool.

Virtkick makes VPS hosting easy for your clients with the lightweight and user-friendly approach. Whether you're a small data center, a game hosting company or a huge enterprise, Virtkick is easy to plug-in and make the most of your hardware without extra costs.

Ubersmith is:

Zuora is the leader in online recurring billing and payment solutions for SaaS and subscription businesses.

WeFact Hosting is an easy-to-use and beautiful designed billing solution specially made for hosting and webdesign companies. Automate your company, register domains realtime, create hosting accounts on your server, process orders and send invoices. An order form with domain checker and client area are included!

iHost is a complete billing and provisioning automation system for web hosting and other online service providers. Acquire new clients, accept orders, handle payments, and provision services all without any human intervention.

Complete client management, billing & support software. BoxBilling is free and will always be free! You can sell any product imaginable - web hosting, software licenses, servers, downloadable products and setup any custom products.

Manage your own Hosting Company by ShineISPbilling software – Domain Management – Free Open Source – New BSD license

TheHostingTool was launched on the 3rd of December 2008 aiming to provide the next generation in free, hosting applications. It provides you, the webhost, near complete automation on everything you want it to do. So that means, signup, monthly posts checking, suspension, and termination. While it does that, it provides client features, like the client control panel that gives the clients the power to manage their account. In addition, they can check their monthly forum posts, edit their details, and check announcements. TheHostingTool also has relatively frequent updates and great support from a growing community. »

Parallels Business Automation Standard offers a comprehensive cloud billing and automation solution for scaling mid-size web hosting operations, and delivering complete customer lifecycle management.

ZBilling Net is a Free ASP.NET MVC Billing solution not just for WebHostings and Freelancers, but for everyone that are looking for a recurring billing software.

HostBill is fast and efficient client management, support and billing web based software for hosting and online companies. HostBill can make your life easier from client signup, through account automated provisioning, support and billing to termination. Automate your business with HostBill.

BillingServ provides hosting companies & small businesses with a software as a server billing system designed to increase ease of billing, cut costs and increase stability as BillingServ is hosted in the cloud.

Have your staff manage support tickets painlessly and quickly. Prevent emails and support issues from getting lost. ClientExec's email management system helps you route, track and deliver messages.