Starwood, Le Meridien, Marriott, Shangri-La, Peninsula Hotels, Langham Hotels,
Mandarin Oriental & IHG
Other famous clients include Mount Juliet, (Ireland), La Cala Resort (Spain), Aphrodite Hills (Cyprus), Stoke Park (England), Doha Golf and Country Club (Qatar – Middle East) and Vilamoura Golf (Portugal).
In total, more than 200 Golf and Leisure Resorts worldwide use Concept Golf and Spa management software, which is installed in 95% of the Golf courses in Portugal.
In 2006, Mastel Consulting becomes a Global Partner of Concept Software System (CSS)