About Rockliffe

Rockliffe is a privately owned company that is dedicated to building rock solid communication software for service providers, enterprises and consumers. Based in California's Silicon Valley and with European headquarters in the UK and Asian headquarters in Jakarta, Rockliffe has numerous OEM relationships as well as a strong base of industry-leading strategic partners and technology partners.Rockliffe is a world class expert in mobile email and chat software having delivered four mobile communication products to market.


Rockliffe's Mission is to deliver "Rock Solid" server, desktop and mobile communication software for service providers, enterprises and consumers. In contrast to most of the software industry, our Rock Solid software is designed and developed from the ground up to be: Small and compact, very high quality, very high performance and fully fault-tolerant.

Executive Team

Rockliffe's management team and board members have proven track records in building software businesses and delivering complex and innovative communication software products to the market.

John Davies, Chairman, Founder, President and CEO

John founded Rockliffe in Silicon Valley and has grown the company into a world-recognized leader in mobile communication software with subsidiaries in the UK and in Indonesia. Before founding Rockliffe, John spent many years in various management roles in Silicon Valley technology companies including ROLM, Rugged Digital and Cooperative Solutions. John graduated from the University of Manchester, UK, with double first class BSc and BEng degrees in Engineering and Business.

Igusti Manik Sugiyani, VP Business Development

Igusti Manik Sugiyani is a serial entrepreneur. Manik started her first home business when she was 19 years old. After she graduated from university she worked at Triple A Communication in Jakarta and took over ownership within a year. Manik cofounded 3 companies in the USA before joining Rockliffe as VP Business Development in 2010. Manik has a BSc in Finance & Accounting and is one class away from a post baccalaureate/second BSc degree in MIS from San Jose State University.