Shortly after the Nigerian government blocked Twitter in 2021 for removing a post by the country's president, its verified handle @NigeriaGov appeared on Koo, an Indian microblogging platform that was little known overseas.

It was a major milestone for Koo, which had launched with a focus on Indian languages and a government-friendly stance even as its bigger rival Twitter increasingly locked horns with authorities over its content moderation policies.

It was also a vindication for the Indian government, where many officials are on Koo, and which last month hailed another locally made technology: a mobile operating system, BharOS, to challenge Google whose Android operating system dominates the country's smartphone market.