InteRes ranks amongst the leading software companies in the travel industry. Our clients – well-known tour operators, travel agency chains as well as airlines - benefit from our trend-setting multi-host solutions, especially in the area of air content aggregation.

  • November 2015InteRes becomes a member of OTDS e.V
  • ***Wishing our clients and partners a wonderful Christmas time***


Our clients – well-known tour operator, travel agency chains as well as airlines –
benefit from our trend-setting multi-host solutions, especially in the area of air content aggregation.


With the official foundation of InteRes 1997 a success story started. The milestones of this story are:
  • 1997
    Partnership agreement On 02/27/1997 Rainer Herrmann, Volker Hermann and Thomas Kreß contracted the articles of partnership. In July 1997 the first product was launched successfully: The InteRes IBE
  • 1998
    IBE In September 1998 InteRes and the company Conet Consulting cooperated and started the „Reservation-Engine“.
  • 1999
    In February 1999 InteRes launched the product „David“, a system that is able to search for available seats in all CRS-systems. In March the Swiss airline Crossair started to sell vacant seats via the online booking channel. Crossair was InteRes first airline reference customer. Two month later, in May 1999, InteRes offered clients an intelligent and rules-based database for the first time.
  • 2000
    In February 2000 InteRes built the technical platform for the TUI Group, with interfaces for Amadeus, Sabre and for the TUI-System IRIS. The TUI Group acquired 25,1% of the software company.
  • 2001
    Expansion / Seat maps In March 2001 InteRes expands its sales in Germany. Number of employees grows from to 6 to 13. In November 2001 Midwest Express Airlines (USA) launched the feature “interactive seat maps”, which has been developed in cooperation with InteRes.
  • 2002
    Mercado / In January 2002 the Mercado Server was developed. A few months later, in October 2002, InteRes and L´TUR developed the website “”. The dynamic-packaging-technology combines low cost flights and hotel offers.
  • 2003
    Travel agency chains In October 2003 InteRes upgraded Mercado and numerous travel agency chains have been connected.
  • 2006
    Charter & Rental Cars In September 2006 Mercado integrated charter flight tariffs, rental car offers and real time statistics.
  • 2013
    In 2013 Thomas Kreß decided to leave the company. Since 2013 Volker Herrmann leads the company as the managing director.
  • 2015
    Lörrach In May InteRes opened a branch office in Lörrach in the innocel innovation center. The geographical proximity to some of our clients is just one advantage.
How to find us
By car:
Take the highway A5 or A67 to Darmstadt and take the exit "Darmstadt Mitte" at "Darmstädter Kreuz". Automatically you will enter the "Rheinstraße". Our buliding is located on the right hand side.

Public transport:
Our office is located at the bus stop "Rhein-Nekar-Straße" which is two stops from the main station.
Take the bus H or the tram 1,2,3 or 5 into the city. The ride will take five minutes.
InteRes GmbH
Rheinstrasse 44-46
64283 Darmstadt

Tel: +49 (6151) 307 40 0
Fax: +49 (6151) 307 40 11

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Interes Team
Anfahrt Interes Darmstadt