htmx is a niche technology right now but it's enjoying a bit of momentum. It's a refreshing take on frontend compared to the mainstream tools right now (Next.js, Remix and the like). Rather than JavaScript everywhere, htmx gives developers more reasons to use their favourite backend language and still develop interactive web apps.

But anyway, I guess the difficult part is to determine "Significant traction" with some level of objectivity. I'd say something like: a Unicorn company uses htmx prevalently for their web frontend, or a YCombinator submitted startup chooses htmx as part of their stack, or similar. Any suggestions?