Node : https://bit.ly/3ZYXmi6 Mongo: https://bit.ly/4ailTUd FreeCom: https://bit.ly/403knQO Oracle Hospitality : https://docs.oracle.com/en/industries/hospitality/hotels.html Oracle Hospitality OPERA 5, OPERA Cloud, and Suite8 ProductsValidated Interfaces https://docs.oracle.com/en/industries/hospitality/ochti/F23596.pdf