work4all all-in-one ERP

ERP and inventory management optimally integrated into CRM and project management

In the cloud or on your own server
Over 35 years of ERP and project experience
With integrated AI agents
Darstellung des ERP-Bereichs in work4all

Excellent on all platforms

DATEV Marktplatz Kundenbewertung 5 Sterne
work4all Google 5 Sterne Bewertung
work4all App Store 4,9 Sterne Bewertung
work4all ERP-System des Jahres Award 2025
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Siegel vom Bundesministerium für Forschung, Technologie und Raumfahrt
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1,000+ companies trust work4all

From individual users to teams of 200 users. From office staff and field technicians on the go to management.

“At our company, everyone works with work4all — and you can feel that in everyday operations. We save an enormous amount of time, especially when creating quotations, inquiries, invoices, or delivery notes, and we work very efficiently.”
Matthias Keite
Shareholder, ARQUS Engineering Office
Your all-in-one Solution

Overview of ERP / inventory management features

Quotations and costing

Using predefined item master data and template documents, quotations can be created with just a few clicks. All master data is transferred directly from the customer data. Quotations can be sent by email directly from work4all.

Angebot Möller
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Item management

Item management is the core of inventory management in work4all — all products, services, stock items, bills of materials, and activities are managed here. All relevant data for your service portfolio is stored centrally.

Procurement and accounting

work4all supports the entire commercial process: From offer preparation to order processing to delivery notes and invoices — all integrated into the digital customer, supplier and project file.

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Ordering system

With the ordering system, you can order replenishment from the item list and convert material or subcontractors required from customer orders into an order. Central purchasing, which is controlled by demand requirements, can also be represented.

Controlling, Forecast & Liquidität

Controlling, forecasting & liquidity

You will certainly receive monthly evaluations (“BWA”) from your accounting department or tax advisor — usually around one month after the monthly closing. With work4all, your company's financial situation is available on a daily basis.

Controlling
Dispositions Ausschnitt

Disposition of rental equipment

Will I have a rental item available in sufficient quantity in the future, considering all rental transactions? This question is answered by the work4all scheduling feature—the daily view provides a quick overview of availability.

Incoming invoice including OCR

work4all supports the e-invoicing formats ZUGFeRD and XRechnung and therefore fulfills the legal “obligation to receive e-invoices,” which has been in effect since January 1, 2025. Both formats can be conveniently captured in work4all via drag and drop, after which the invoice data is automatically extracted from the XML file. Our XRechnung viewer also creates a visual simulation of the incoming invoice from XML files.

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Packliste

Inventory management

work4all enables digital warehouse management either via the work4all desktop software or through the Android-based mobile warehouse scanner app for barcodes. The inventory management system can be used for a wide variety of warehouse types.

Maintenance / subscription invoices

The maintenance / subscription invoicing module brings structure and automated billing to your maintenance, service, or rental contracts. Automated, recurring invoicing creates more time for day-to-day business.

Abo-Verträge in work4all
ERP / inventory management

Feature overview

Clear customer and supplier records for all commercial processes

Simple conversions, for example from quotation to order, via drag and drop

Flexible configuration of the software, suitable for everyone from service providers to manufacturing companies

Fully integrated project and inventory management (including barcode support)

Häufig gestellte Fragen zum Einsatz von work4all ERP

What is ERP software and why do companies need it?

ERP (Enterprise Resource Planning) software consolidates core business processes such as quotes, orders, invoices, purchases, and inventory into a single system. Instead of maintaining data multiple times in Excel spreadsheets or disconnected solutions, all departments work from a shared database. This reduces errors, saves time, and provides an up-to-date overview of orders, inventory, and cash flow at all times. In this context, the term ERP encompasses all commercial and inventory management (stock and material movements) processes.

What sets work4all apart from a traditional ERP solution?

work4all seamlessly integrates ERP and inventory management with CRM, document management, and project administration in a single software solution. This means customers, projects, invoices, items, and employees are not managed in separate tools, but are directly linked to one another. For example, you can immediately see which quotes, invoices, or delivery notes belong to a customer in their customer file, along with all related communication.

Which companies and industries is work4all ERP suitable for?

work4all is primarily designed for small and medium-sized enterprises, ranging from individual users to teams of up to 200. The software is industry-agnostic and is used in sectors such as plant and mechanical engineering, engineering and planning firms, trade fair construction, skilled trades, solar/photovoltaics, and IT services. What these industries have in common is typically a focus on project-based or trading business, involving services and inventory management, often B2B but also B2C. work4all can be flexibly configured to suit everything from service providers to manufacturing companies.

And most importantly: work4all is standard software, meaning all our customers use the same version. While work4all is highly customizable, individual extensions are generally integrated via API. This ensures that your updates remain stable while you regularly receive new features.

How quickly can quotes be created with work4all?

Quotes can be created in just a few clicks, as customer and item master data are automatically populated. The finished quote can be sent directly from work4all via email, without the need to manually transfer it into a separate document.

How do item management and inventory management work in work4all?

Item management is the core of our inventory system, providing a centralized way to manage products, services, and bills of materials. Inventory management is fully digital and can be updated directly on the warehouse floor using a barcode scanner app, which is also compatible with Android devices.

How does the purchasing system in work4all work?

Orders can be generated automatically from customer orders, eliminating the need to track required items manually. Of course, orders can also be triggered based on minimum or reorder levels, or based on production orders. This reduces stockouts and speeds up the purchasing process.

How does work4all support controlling and liquidity planning?

Instead of waiting until the end of the month for reports like in traditional accounting, work4all provides daily updates on outstanding items, revenue, and liquidity. Project controlling with contribution margins is also always up to date and fed by the same data; once entered, time logs, incoming invoices, and outgoing invoices serve as the basis for various controlling views. This allows you to maintain a clear economic overview of your company at all times. Please note that work4all is not accounting software; data is transferred via interface to standard accounting programs such as Datev, Addison, or similar.

Does work4all support e-invoicing via ZUGFeRD and XRechnung?

Yes, work4all covers the entire process from quotes and delivery notes to e-invoicing, and supports both the ZUGFeRD and XRechnung formats. This ensures businesses are fully prepared for legal electronic invoicing requirements.

Is work4all compatible with DATEV or other financial accounting software?

Yes, work4all offers a DATEV integration (as well as support for other accounting software) that allows you to transfer invoice and accounting data directly to your financial accounting system. This streamlines the process from invoicing to submission to your tax advisor, a benefit our customers frequently highlight as a significant advantage in their daily operations.

Bring your growing business processes into a digital home

work4all connect what belongs together: projects, customers, invoices, documents, articles, employees. Everything clearly integrated in one software system.

One control centre instead of lots of special tools and makeshift solutions
Experienced process and digitalisation specialists by your side
Easy to use for all department - even when you're on the move
"Transparent customer and project management, fair pricing, and DATEV integration make work4all a true home for our business."
Foto von Andreas Steffens - Geschäftsführer unseres Kunden Steffens Systems GmbH
Andreas Steffens
Managing Director, Steffens Systems GmbH