02.02.2025
InvoiceNinja: The extensive self-hosted Solution for Invoicing
InvoiceNinja is much more than just an invoicing tool—it is a comprehensive platform that supports businesses of all sizes, freelancers, and agencies in automating and...

InvoiceNinja is a powerful open-source software for invoicing, online payments, expense tracking, and project management. The platform is specifically designed for freelancers and small businesses, offering all the tools needed for professional financial and business management.

InvoiceNinja is a powerful open-source software for invoicing, online payments, expense tracking, and project management. The platform is specifically designed for freelancers and small businesses, offering all the tools needed for professional financial and business management.
As an experienced InvoiceNinja partner, we support you in installing, configuring, and customizing this versatile business solution to your individual requirements. Leverage the benefits of automated invoicing and professional client communication for your business.
We install, host and operate InvoiceNinja for your company - either on our secure, GDPR-compliant infrastructure in Germany or other locations, as well as on-premise in your own environment.
With 24/7 monitoring, enterprise support, backups and professional maintenance, we ensure maximum availability and reliable operation of your InvoiceNinja instance.
Create and send unlimited invoices with real-time PDF preview, customizable templates, recurring invoices, and automatic reminder functionality.
Integration with numerous payment gateways like Stripe, PayPal, Braintree, Square, Mollie, and more for fast online payments and automatic status updates.
Create professional quotes that can be automatically converted to invoices upon approval, enabling a seamless sales process.
Manage projects with Kanban boards, track tasks and working hours, and convert them into invoice items with a single click.
Track expenses, import receipts, categorize costs, and bill them to clients if needed, with optional bank account integration.
Provide your clients access to a personalized portal where they can view invoices, make payments, and download documents.
Gain detailed insights into your finances with revenue reports, client statements, aging cohorts, and customizable reporting options.
Customize invoice designs, email templates, numbering sequences, and user permissions to match your specific business requirements.
Connect InvoiceNinja with Zapier, Make, Pabbly, and other services for automated workflows and seamless integration into your existing tool landscape.

See how simple and efficient InvoiceNinja works in practice. From installation to productive use.
Open source enterprise-ready for productive workloads - we run your applications with highest security standards and enterprise support
Open source software for business-critical processes requires professional maintenance, continuous updates, and enterprise-grade support. With our InvoiceNinja Enterprise Managed Hosting, you get the necessary infrastructure and support to reliably operate open source in production environments. Backups, SLAs, telephone support, and personal contact - so you can focus on your core business.
We also offer customized InvoiceNinja Enterprise solutions for your specific requirements. Contact us for an individual quote.
Good choice – we'll help you get started or with operations.
As a Managed Service customer at WZ-IT, you have access to our exclusive portal: Monitor your infrastructure in real-time, schedule maintenance, request quotes, and get direct support – all in one central location.

These solutions are often used together with Invoice Ninja
These solutions offer similar functionalities and can be evaluated together
Whether a specific IT challenge or just an idea – we look forward to the exchange. In a brief conversation, we'll evaluate together if and how your project fits with WZ-IT.
Timo Wevelsiep & Robin Zins
CEOs of WZ-IT

