Depending on ones needs for search, a shout-out to Sourcegraph (https://sourcegraph.com/search) which in addition to offering anonymous search also supports regex searches and -- perhaps most relevant -- "go to symbol" for a huge number of cases. That alone can often save a "search" because it understands the relationships in the text

It's painless to use them because they have mapped the routes on sourcegraph.com to the github repo, so things like https://sourcegraph.com/github.com/kubernetes/kubernetes just magically work

I love them so much