This is sad news. Gigablast ( https://www.gigablast.com/ ) was an independent search engine with its own index. The main owner used to write articles about the death of independent search.

I often wondered how he kept going. He had a building full of servers and very limited search users & revenue.

https://blog.mojeek.com/2023/05/farewell-gigablast.html [blog mojeek com]