He was a founder of Topsy, a social search and analytics company that was acquired by Apple Inc in December 2013.

[1][2] A former Open Source Initiative board member, he is Founding International and Managing Editor of peer-reviewed journal First Monday, and Programme Leader of Free/Libre and Open Source Software at UNU-MERIT.

[3] Ghosh has undertaken several studies on free software,[4] which he terms "FLOSS" - an alternative term for free software which he is credited with coining[citation needed].

FLOSS emphasizes the essential value of the term "libre" (meaning with few or no restrictions).

[5] Ghosh's work represents an effort to reshape the global understanding of FLOSS, including the governmental and academic spheres.