As a specialist for IT concepts we focus our thoughts and actions always to meet the needs of our customers and this for more than 35 years.

Our services range from consulting and concept development, system integration and implementation to project management, training and rollout. For all of our solutions, we also offer a consistent service concept and applications from the cloud. We see ourselves not as anonymous conglomerate with long decision-making, but as equal partners for the middle class.

  • 1975 Signing of the company agreement for the Siller Data Service GmbH and registration into the commercial register of Heilbronn. Development of programs for payroll and ERP systems.
  • 1981 Planning and implementation of a business solution for the shoe retail. Contract with the Salamander Association, Kornwestheim.

  • 1985 Development of the ERP system INTERSYS for the INTERSPORT Germany eG. This type is optimized running to date in more than 700 INTERSPORT stores.
  • 1991 Establishment of a branch in Switzerland, Bern.
  • 1996 Design of the Internet presence and development of the press portal POLDI for the Fiat Group Automobiles Germany AG.
  • 1998 Development of the Internet information system for the IHK Heilbronn-Franken.
  • 1999 Development of a used car market for FIAT (Automobil AG Germany) and an Internet ordering system for the INTERSPORT Deutschland eG.
  • 2000 Moving to the industrial park "Böllinger Höfe" in Heilbronn, Wannenäckerstraße 43
  • 2001 Opening of a new branch in Bodelshausen. The Siller Data Service GmbH becomes the Siller AG. The board members are: Prof. H.-F. Siller (Board Chairman), Jörn Bülow, Ralf Michi. Integration of the ERP system INTERSYS in the SAP portal INTERSPORT Germany.
  • 2002 The Siller AG is Microsoft partner. Start of the strategic partnership with Microsoft Germany.

    Introducing MRS-Sales
  • 2005 Obtaining the Partner status "Microsoft Gold partner / ISV Software Solutions".
  • 2007 Additional qualification with the competence "Information Worker Solutions" at the Microsoft Gold Partnership.
  • 2009 Redsign of Siller AG´s Corporate Identity by advertising agency adextra
  • 2010 Introducing the App – Siller SalesBook for Apple iPad

Founding year


Business Divisions



  • INTERSYS – ERP solution for the INTERSPORT network
  • Siller POS – POS solution for retailers
  • MRS-Solutionsuite – Mobile Industry Solutions


  • Advice
  • Customizing
  • implementation
  • Support
  • Hosting / Housing
  • VPN networking
  • Online training and classroom seminars

Our Strategy

Since, the company was founded in 1975. The Siller AG sees itself as a specialist and partner for the retail industry, with an emphasis on ERP systems and POS systems. Alone in retail more than 400 integrated ERP solutions were delivered and supported continuously by Siller AG.

For several years, the focus of the company is located in the area of mobile B2B applications. In this context, the Siller AG has developed one of the most advanced mobile field service solutions on the Apple iOS system. This solution is currently in the 2nd generation and is backed by our powerful middleware called mCube. All leading ERP-systems (SAP, Navision Dynamics, CAD, etc.) can be implemented by mCube.