I run a problem validation platform & 'YouTube like public chat for ecommerce websites'[1] a need-gap being tracked there.
Although Netvyne isn't a chat, It seems to address the core problem of that need-gap i.e. A way for consumers to interact with each other on a website without using the website's own interaction system.
You're welcomed to comment about Netvyne in [1] explaining how it addresses that problem.
[1] https://needgap.com/problems/141-youtube-like-public-chat-fo...