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Software analysis

We help create transparency in legacy systems and provide a clear overview of their structure, quality and technical aspects.

Bespoke, flexible software applications make your business successful. We make sure that it’s still that way tomorrow.

Established companies have been using our tools and skills for over 30 years:

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Discover our service portfolio:


The digital mastermind for business-critical core systems.
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Software assessment

Make the best possible decisions with our compact analysis service.

Generational transition

Harness the potential of early-career talent for the future of your legacy systems.

Usability engineering

Optimize your core processes from the user’s perspective.
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The tool for automated analysis of your legacy software.

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Choose and design the future of your core systems

It’s not just the front end that determines the success of your digital business processes. The back end, where you deploy complex algorithms and process large amounts of data, also plays a significant role.

When you need to provide new services for your customers as quickly as possible; when you have to replace experienced software developers with young talent; when you have to make the right decisions for the future of your systems – then you must take action quickly and purposefully, without hesitating or slipping up.

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Get on the front foot, and stay that way!

We make sure that you not only make optimum decisions for the future of your legacy systems, but can also implement them quickly and effectively. We ensure that new resources are ready to be deployed as quickly as possible, so that your overall software roadmap doesn’t fall apart when individual experts retire.

We help you introduce suitable tools and provide expert advice on particular analysis questions whenever you need it.

A fleeting acquaintance is not a reference

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One of the greatest challenges in maintaining matured Cobol applications is onboarding new employees into existing projects. With eXplain, we are able to onboard new employees into ongoing development projects much faster and more efficiently. This enables us to gain speed, enhance quality for our customers, and simultaneously save costs in the onboarding process. eXplain has become an essential component of our toolchain in the Cobol field.

Dieter Kölbl IT Lead Architect zFutureT-Systems International
Skyline Frankfurt a.M.

PKS’s eXplain enabled us to identify a considerable portion of code in our Natural and COBOL-based core banking system that was no longer needed, so we could fundamentally clean up and clear out the system. In addition, the documentation that was created automatically by eXplain meets our auditing requirements fully. Those are just two of the ways that eXplain supports us in our Core Banking System Stabilization project. I’d also like to highlight how pleasant it was to work with the expert PKS team, and how we appreciated the flexibility as we worked on the project, so we could always take Helaba-specific requirements into account.

Stephan Böcher Group Lead Application DevelopmentHelaba-Landesbank Hessen-Thüringen
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Using eXplain has helped us reach a new level in various ways. We have not only become more innovative, but we also save time and money as documentation is created automatically. In addition, the clustering function will give us a better overview of our wide range of software components in the future. Working with eXplain is a real asset for our core business.

Thomas Glaser Software Development Central DatabaseDPD Deutschland GmbH
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Here at Wesco we generally use Infor XA as our central ERP program. However, over the decades we’ve made lots of custom changes, for which we have developed many RPG programs. We’ve been using the PKS tool eXplain for several years so we can always have an overview of everything and react quickly and appropriately when something needs changing. eXplain simply makes it easier for us to develop software. We can identify dependencies at a glance and implement changes very securely. We wholeheartedly recommend eXplain and PKS.

Markus Strotmeyer IT / OrganisationM. Westermann & Co. GmbH
Man standing in front of a shelf with medication

eXplain gave us fantastic support when analysing RPG programs and process structure. The graphical presentation of links between programs/modules and IO tables works brilliantly, and the export options, such as to HTML/XLS or to a visual editor, help us continue to document the application. eXplain also helps us identify obsolete program elements and therefore clean up the source code. Our collaboration with the PKS team was always very open and constructive, and we were even able to contribute our own ideas for developing eXplain further.

Pascal Nicolas Lead ITKrieger-Pharma

Do you have specific questions or want to find out more?

Get in touch now and book a one-to-one consultation.

We’ll start with a discovery session to discuss your requirements and find out whether and how we can help you. Based on that, we’ll organize the next steps for you, such as product demos, reference contacts or consulting sessions.