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© Copyright 2000 - Merus Software Ltd.
Merus and Mercatum are trademarks of Merus Software Ltd

Enterprise e-Commerce Solutions

your success is our aim

Are you looking for a superb internet trading platform for your business?
At Merus we are specialists in tailor-made, integrated on-line catalogue solutions.
Our complete, cost-effective systems are carefully designed to provide unmatched performance for you, your customers and business partners.
We can create a unique platform compatible with your existing systems, enabling your business to expand while remaining refreshingly simple and familiar to use.
With Merus, even complex, high volume requirements are transformed into smooth-running, scalable operations tailored to your needs.

Merus mercatum™

Take a look at Mercatum, our versatile, strongly-supported platform for e-commerce.
Developed exclusively by Merus, it is designed to give a performance second to none.

More about mercatum™...

How we work

Merus prides itself on offering total support and service from start to finish.
Our unique J2EE compliant e-commerce solution provides everything you need for optimum peformance.
Merus manages your project from its initial specification through to installation, maintenance and support.
We then ensure it performs to your demands and continues to give your business a vital platform from which to launch future success.

More about how we work...

Let's talk

Is your turnover greater than £5,000,000?

Then let's talk.
Merus is wholly committed to your success and we would like to be part of your organisation.

Please ask us for references.


+44 (0)1453 708 600

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How we work

Put simply, Merus can enable your business to achieve maximum profitability.
We do this by creating superbly efficient e-commerce catalogue systems with astonishingly low running costs, high speed and flexibility, based on our own mercatumô product.
Merus carries out the complete set-up of mercatum™. We provide all software and install the system on a server and ISP host of your choice.
Our skilled staff work swiftly and comprehensively to deliver results for you, on time and in budget. We believe it is this, coupled with unmatched service and support, which gives Merus the leading edge over competitors.

Smooth project roll out

All our clients benefit from a dedicated project manager who oversees the entire set-up process, ensuring wide-open communication and seamless delivery.
Merus offers a host of vital features, foremost of which is our ability to integrate your new trading platform with the systems your business already uses.
Not only that, but we will adapt our design to reflect the look and feel to your brand. This means that you will be enhancing your business your way, using your own tried and trusted systems.

More about roll out...

Highly responsive support

Merus prides itself on swift, friendly and comprehensive support if you need to change things fast. Pick up the phone: help is always at hand.

More about our support...

Training and consultation

Merus aims to make the integration of our system with your business run without a hitch.
We are here to help, wherever you need it.

More about the Training...


Merus gives security top priority.
We provide the highest, up to date standards; we implement transactional security standards and we offer a high standard of client confidentiality.

More about Security...


Our set up fees are extremely competitive. Once you are up and running, our cost effective support packages mean that you pay only for what needs doing. If you take advantage of our pay-as-you-go service, you only pay when you actually need our support and maintenance services. Alternatively, opting for our fixed annual fee gives you complete coverage with no hidden costs.

More about the costs...


Independence, scalability and speed lie at the core of our unique mercatumô system. Merus has developed mercatumô as a vital e-commerce tool which functions to Java 2 Enterprise Edition (J2ee) standards, enabling your business to perform to an entirely new level.
It operates as a smooth interface between your back office and the internet, accessing the best of the systems you currently use to run your business and integrating them with trading partners.

Main features

This feature set can be adapted to suit your needs.

View all features...

Technical Background

mercatumô currently runs using the latest LTS Java, groovy and gradle technology, and utilises GraphQL to offer a simple and effective API

A typical set-up will use: Linux; the Apache HTTP server; Tomcat (the glue between Apache and Java) and, for the database, Postgre SQL.

Using such high quality open source software enables us to provide our clients with stable, scalable systems at very competitive prices. For high-availability, high-performance, we offer a postgresql database cluster that allows you to scale your mercatum installation to very high levels of user visits.
mercatumô is also designed to make effective use of caching: keeping pages in RAM minimises the need for the significantly slower process of reading from hard disks, especially when they are frequently viewed.

It also reduces the hit to the processor for pages that do not need to be re-evaluated each time they are accessed.

View all technical data...


Currys Business

Currys Business in a leading supplier of electrical products (Computing, White Goods, Consumer Electronics and Mobile phones) to the Uk Business community.


"We have worked with the team at Merus for over 20 years and have found them to provide an excellent, high-performing, reliable and stable solution to grow our business.

As well as an easy to shop front end to our site, we have extensive integrations with our internal systems together with Corporate Buying solutions including Order upload, API integration and Punchout compatibility.

Working with the team at Merus is like working with our own colleagues and they have been great partners to help us through the many changes in a rapidly changing online world as we continue our incredible growth. I would not hesitate to recommend Merus as a great technology partner for similar businesses."

Robert Muir, Head of Online - Business to Business, Currys Business

Ricoh Group

Ricoh Group is a global company selling total document solutions under the brands Ricoh, Nashuatec, Rex-Rotary, Gestetner and Lanier.


"Our task was not an easy one - we had to integrate our whole European dealer network through one business platform - allowing orders to be channeled back to the individual operating companies with various back-office systems.

Merus' committed staff put together a solution that addressed all our issues - providing all the flexibility needed to cater for 15 different countries.

Not only did they deliver the solution as promised, but we are getting excellent support and short response times to change requests."

Roy Bramall, Marketing Director, Ricoh Group


Softcat are a leading provider of IT solutions and services. They provide bespoke, innovative end-to-end technology solutions that help businesses and organisations to succeed. Softcat offer customers a single point of purchase for a broad range of technology, solutions and services.


"Merus have worked in partnership with Softcat for many years now, and this partnership has been instrumental in the delivery of exponential growth of our on-line sales.

The flexibility, speed of response and can do attitude of Merus is instrumental in our ability to quickly react to changes in market conditions or business strategy. As a trusted member of our eCommerce team Merus deliver on time and on budget, every time. I would not hesitate to recommend them to any organisation that is serious about eCommerce."

Craig Williams, Head of eBusiness, Softcat plc

About Us

Merus is a small, skilled team of developers and project managers.

Our staff comes entirely from an e-commerce background, with all having over a decade of experience in the sector.

We are dedicated to providing quality Java- and Python-based solutions to companies with high turnover.

Our mercatum™ platform has been developed to follow a philosophy of pure, clean code. It provides simple, speedy and scalable integration into back office systems, portals and procurement products.

A central tenet of Merus - and what makes mercatum™ so effective - is its ability to expand and adapt to meet even the most complex needs of our clients.

We believe passionately in open standards and follow the recommendations released by the World Wide Web Consortium to ensure wide accessibility.

Most of our work is carried out on Linux or other Unix-like platforms and we sometimes fund the development of open source projects to better meet the needs of our clients.

Merus Software Ltd. began operation in May 2001 and reached profitability at the end of June 2001, without using any credit facilities or third-party financing. The company has been profitable ever since.

Our customers really feel we are part of their growing organisation - your success is our aim.

Please ask us for references.

Legal Notice

Website operator:

Merus Software Ltd
Unit 2 Merretts Mill Industrial Centre
Bath Road, Woodchester, GL5 5EX
Phone: +44 (0)1453 708600

Registered in England
and Wales No. 4205638

Board of Directors:
Natalya Scott
Christian Dannemann
Matthew Webb


Contact Us

Merus Software Limited

Managing Director

Christian Dannemann

Registered in England
and Wales No. 4205638
D-U-N-S 22-187-4279


Unit 2
Merretts Mill Industrial Centre


+44 (0)1453 708 600