Over the years, I've lost count of how often I've searched Stack Overflow for a Postgres question and ended up with an answer by Erwin Brandstetter that was exceptionally thorough and clear. I've become a better developer by learning from his responses.
ErwinDB lets you browse Erwin Brandstetter's answers offline and search them quickly from a TUI. It includes semantic search, syntax highlighting, one-key opening of links in your external browser, and an "Erwin mode" that prominently highlights his posts.