Software modernisation without downtime
wunderwerk takes over your existing software and renews it step by step while your business keeps running.
- 80+ projects
- 5.0 on Google
- Clients for 10+ years
- EU & GDPR first
- Directly with the managing director
Where does your software stand right now?
Companies come to wunderwerk for software modernisation in four situations: the developer has gone, the technology is outdated, Access or Excel has hit its limits, or nobody knows whether the system can still be saved. Software that has grown over time is rarely bad; it has simply got on in years.
“Our developer has left, and the system is going nowhere.”
Freelancer unreachable, agency dissolved, nobody knows the code: we familiarise ourselves with your existing software, secure operations and access, and take over maintenance and further development, after an analysis that shows what you are getting into.
“There are no more updates, and every change is a risk.”
Old PHP, a framework without support, a server nobody wants to touch any more. We secure the legacy system first (updates, backups, tests, deployment) and then renew it module by module, without a big bang and without downtime. Affected by PHP2Shell? There is a dedicated PHP emergency check for that.
“Our whole company runs on an Access database from 2008.”
What started as a helper tool now carries the business: without multi-user operation, permissions or interfaces. We replace the Office solution with a web application that takes over your data and your logic and talks to ERP, shop and CRM.
“We don't know whether the system can still be saved.”
Before you put money into an unknown system: our paid analysis examines code, architecture, security, tests, operations and the rights to the source code. You get a clear recommendation (continue, modernise or redevelop) with a cost range.
What modernisation actually delivers
Software modernisation pays off when it reduces security risks, maintenance costs and dependency on individual people, and makes an existing system fit for the next ten years again. Six effects you can measure it by:
How we modernise your software
wunderwerk modernises software in five steps: initial consultation, paid analysis, decision and roadmap, stabilising and renewing module by module, then operation. No big bang and no months without results: every step has a clear outcome and a cost range, and you decide after each step whether to continue.
- 1
Initial consultation
30 minutes with the managing director: what does the system do, who built it, where does it hurt, what access is there? You get an honest first assessment. Free and non-binding.
- 2
Analysis of the existing system
A paid technical and commercial analysis, usually within one to two weeks: code and architecture, technology and versions, tests, documentation, deployment, security, operations, rights to the source code and dependencies, and the business value of the existing functions and data.
- 3
Decision & roadmap
The result is a recommendation backed by figures, not a gut feeling. Continue, modernise step by step or redevelop. Plus a roadmap with sequence, cost range and the first step that removes the most risk.
- 4
Stabilise & renew module by module
Secure first (updates, backups, monitoring, automated tests, reproducible deployment), then renew piece by piece. The old and new software run in parallel, your data is preserved and your team keeps working.
- 5
Operation & further development
Hosting in the EU, maintenance, monitoring and support during operation, plus new features when your business needs them. We have been looking after many of our clients for over ten years.
AI writes code. We build software.
Thanks to wunderOS and our wunderFactory.
AI has opened up programming to everyone: anyone can put a prototype together today. Whether it turns into software that holds up in day-to-day operation is decided afterwards – in architecture, security, testing and maintenance over the years. That is exactly where prompting and real expertise part ways.
That is why we built our own operating system: wunderOS runs our company from sales to development. At its heart is the wunderFactory, where our AI agents, the wunderBots, build to the architecture rules, standards and tests from 20 years of software development – led by experienced software architects.
The result is software built noticeably faster and more affordably – in the quality you hire us for. We are AI experts and use that to get the best out of your project.
More software for the same budget
The wunderBots handle the routine work. You pay for architecture, decisions and results – not for legwork.
Live in weeks, not months
From the workshop to the first usable version, with changes after that in days. You see early on what works.
Quality is built in, not bolted on
Tests, reviews and security checks run automatically in the wunderFactory with every change – not just when there is time.
Architects, not prompters
The AI executes, we decide: data model, interfaces, operations. That way your software stays maintainable and extensible five years from now.
Bottom line: Bespoke software on terms that make sense for SMEs too – built with AI, with software architects accountable for it.
Thank you very much!
I will get back to you as soon as possible!
You can also book an appointment in my calendar right away: Book an initial consultation
Continue, modernise or rebuild?
Whether an existing system should be continued, modernised step by step or rebuilt is something wunderwerk decides only after the paid analysis, never on gut feeling. We do not judge a system before we have seen it, and even then we do not automatically recommend a rebuild.
A working system has value: established workflows, cleaned-up data, users who know it. We carry that forward wherever possible.
- Continue
When architecture and technology are sound and what is mainly missing is support, tests and documentation. We take over, secure and develop further.
- Modernise step by step
When the core is good but parts are outdated: user interface, database, interfaces or individual modules are renewed one after another while the system keeps running.
- Redevelop
When every change costs more than it brings, the technology can no longer be operated or the source code is missing. Then we rebuild, take over data and workflows and retire the legacy system in an orderly way.
- Honest, even if the answer is “not us”
We work with PHP/Laravel, TypeScript, React, Next.js and React Native. We are still happy to review systems built on other technologies and will tell you openly if another partner is a better fit.
Not just clients. Partners.
We focus on long-term partnerships. You stay flexible thanks to open standards and clear documentation.
What our clients say:
A selection of our client feedback.
★★★★★Many thanks for building and looking after our online learning platform.
We can wholeheartedly recommend Christoph and his entire team.
Whatever we ask for, almost everything is made possible, and the ongoing personal contact works brilliantly too. Many thanks.
We run the online shop thecurtain.shop for made-to-measure curtains and Roman blinds.
Working with wunderwerk was excellent in every respect.
Thanks to their work, we can offer our customers an intuitive, professional shopping experience that perfectly reflects our craftsmanship. Many thanks for the great collaboration!
Very likeable wunderworkers! Fast, uncomplicated, competent and always ready to save the world!
Highly competent support. Well advised all round.
Chris knows how to solve a problem. Quality has a name: wunderwerk.io
We had the wunderworkers develop bespoke industrial software for creating recipes for a highly sensitive industrial process.
The collaboration was extremely professional from the outset: the team quickly understood our complex requirements, implemented them precisely and always paid close attention to maximum reliability and security. I would particularly like to highlight their technical know-how, clean documentation and fast response times for questions or change requests.
The recipe editor is now running in several plants in Sweden, Italy and the Czech Republic.
The software runs reliably, is intuitive to use and our customers are completely satisfied. We can recommend wunderwerk without reservation!
wunderwerk built a digital solution for my photography business that has been running stably and reliably for years. The support is top-notch, reliable and competent. I can only recommend them.
Christoph Niedermoser and his team impressed us with their professionalism, precision and reliability, both in the consulting phase and in the implementation that followed.
Our requirements were implemented perfectly, and the GPS tracking system has now been in successful use in several of our facilities for a number of years.
Chris and his team gave me superb advice on my app idea. Uncomplicated, fast and professional! Highly recommended!
We have already implemented and completed several projects together over the past few years.
Professional implementation and personal contact.
Highly recommended!
Perfect implementation of our
billiards platform.
A very pleasant collaboration. It was fun! Highly recommended!
🇦🇹 Funding check
Which funding fits now?
Planning a digitalisation project in Austria? KMU.DIGITAL, Austria’s SME digitalisation programme, no longer accepts new applications: its budget is used up, and it will not continue from 2027. As a KMU.DIGITAL Certified Digital Consultant (CDC), I show you in a free funding check which programmes fit your project now.
What we clarify in a free 15-minute call with the founder of wunderwerk:
- Whether your company and your project are eligible
- Which funding programme is currently open
- What you need to consider before applying
- Which costs are eligible
Important: The safe order is: application first, costs afterwards. Only the funding body can decide.
Why us?
What else is on your mind?
Many projects touch more than one topic. Here are the other areas in which we support businesses.
Want your system to move forward again?
Whether your developer has left, the technology is outdated or Access has hit its limits: in a 30-minute initial consultation we clarify where your software stands and what the first step looks like.
Frequently asked questions about software modernisation
Question not listed? We will answer it directly with the managing director in the free initial consultation.
What is software modernisation?
Software modernisation (also called legacy modernisation) means bringing existing software up to current technology, security standards and today's requirements step by step, instead of throwing it away completely. This ranges from updating language and framework versions to a new user interface or database through to replacing individual modules. wunderwerk only decides which level your system needs after an analysis, and then renews it module by module while it stays in operation.
When should legacy software be modernised?
Legacy software should be modernised as soon as one of these signals appears: there are no more security updates for the language, framework or server, every change takes weeks or nobody dares to make it any more, the original developer can no longer be reached, new requirements such as interfaces, mobile use or AI cannot be implemented, or the software only runs on a single old computer. In the free initial consultation, wunderwerk assesses how urgent it is in your case.
How much does software modernisation cost?
The cost of software modernisation depends on the size, condition and technology of the system, which is why wunderwerk does not quote a flat price but works in stages, each with its own cost range. It starts with a paid analysis at a manageable fixed price. This delivers the recommendation and the cost range for the modernisation itself, which then takes place in modules that you approve individually. You can get an initial estimate via the form or in the initial consultation.
Modernise or redevelop, which is more economical?
Whether modernising or redeveloping is more economical is decided at wunderwerk by the paid analysis, not by the service provider's preference. Modernising pays off when the business core is sound and mainly the technology, tests and operations need renewing. Redeveloping pays off when every change costs more than it brings, the technology can no longer be operated or the source code is missing. wunderwerk compares both routes in terms of cost, risk and duration and recommends the one that pays off for you, not automatically a rebuild.
Can you take over software whose developer can no longer be reached?
Yes, wunderwerk takes over software whose developer can no longer be reached; it is one of our most common cases. The prerequisites are access to the source code, server and database, as well as the rights to the code. During the analysis we familiarise ourselves with the system, document it and secure operations first (backups, updates, monitoring). Then we take over maintenance and further development. If the source code is held by a previous provider, we help you obtain it.
Will our business keep running during the modernisation?
Yes, your business keeps running, because wunderwerk modernises without a big bang. The existing system keeps running while individual modules, the user interface or the database are renewed and switched over one after another. Your data is preserved and migrated with checks, and your team keeps working throughout. A cut-over date with downtime is the exception, not the rule.
Can you replace Access, Excel or FileMaker solutions?
Yes. wunderwerk replaces Office solutions that have grown over time with a web application that takes over the existing logic and data and adds what Access and Excel cannot do: several users working at the same time, permissions, logging, interfaces to ERP, shop and CRM, and use on smartphones. The old file stays in use until the switchover.
How long does software modernisation take?
At wunderwerk, the analysis usually takes one to two weeks and stabilisation (updates, tests, deployment) a few weeks. The actual renewal runs in modules of a few weeks each, so you see results continuously. A medium-sized system is typically modernised within a few months, without ever coming to a standstill.
Who runs the system after modernisation, and where is the data stored?
After modernisation, wunderwerk can keep running and maintaining the system, hosted in the EU, on-premises or in your own cloud if you prefer. That includes updates, backups, monitoring, support and new features when your business needs them. The analysis already checks the legacy system's security and GDPR compliance, and we build roles, permissions and logging into the renewed software. We have looked after many clients this way for over ten years. Whether your existing application has open security gaps, our security check for web applications shows you.
Which technologies do you use for modernisation?
wunderwerk develops with open, widely used technologies, PHP/Laravel, TypeScript, React, Next.js and React Native for mobile, and takes over systems that can be run on this stack in the long term. We are happy to review systems built on other technologies and will tell you openly whether we are the right partner. We do not take on .NET projects for ongoing maintenance.
Is there funding for software modernisation?
Yes, modernisation and digitalisation projects are funded in Austria, Germany and Switzerland through various programmes, depending on country, region, company size and project. However, KMU.DIGITAL, the Austrian SME programme, no longer accepts new applications and will not continue from 2027. wunderwerk shows you which programmes are available now in a free funding check or the initial consultation.
Why wunderwerk for software modernisation?
wunderwerk brings over 20 years of project experience and 80+ projects, and has supported many clients for more than ten years, including several generations of their systems; we have looked after the Egger Group's web application since 2010. wunderwerk is a small, well-coordinated team of software architects and full-stack developers in Tyrol (headquarters in the Kitzbühel district), Salzburg, Vienna and Berlin, working for companies in Austria, Germany and Switzerland, remotely and on site. You talk directly to the managing director, get a cost range before every step and receive software built to last instead of yet another system that will need modernising again in five years.