It provides online portals for package travel reviews and bookings in Germany, Austria and Switzerland, under the HolidayCheck brand.

[4] HolidayCheck was started in 1999 by students in Konstanz, Germany, including Markus Schott, Hakan Öktem, Jens Freiter, Jörg Kampshoff and Sascha Vasic.

[10] The ensuing publicity prompted the founders to register the site as a commercial venture, debuting on 11 November 2003.

[12] HolidayCheck also operates Zoover, a Dutch-language hotel review portal, as well as weather platform Meteovista and car rental comparison site MietwagenCheck.

[17] The founders sold their remaining 6 percent of the company in June 2013; Tomorrow Focus AG then became the sole owner.