These technology platforms are operating in what is known as the short video space.
Practically, those who had the most followers on TikTok and monetised them moved to Instagram and Facebook. YouTube is making a big push into this space, and starting off in India.
Sharechat/Moj - this has totally captured the regional language space, and the content reflects that. This is a big player.
Roposo - they were an early player in the short video space, and in fact had a viable platform long before TikTok. Their channel curation, content diversity, constant updates and thoughtful UI design all make it a winner IMO. The problem is that it just seems to be unable to grow rapidly, and is facing too much competition. As a creator, it is one of those platforms that you can also be active on, but not make it your primary one.
Others are not worth mentioning, just hype bubbles that have already collapsed, and could do with some male representation.
What TikTok did right was to reach out to the creators and give them viable pathways for monetising their content. They also played the regional language game very well, and captured a considerable portion of the market. The UI made it straightforward to create and share videos, which was actually more powerful than alternatives. The features of the app were iterated rapidly based on the sensibilities and requirements of the markets that it was growing the most rapidly in, and India was one of those markets.