[solveforall]

In terms of results from crawling, I would consider Bing a "serious" competitor, although still a distant second. They are well-funded, used in ~30% of searches in the US, and don't look like they're going away anytime soon. It would be sad if they did because Google would then be a total monopoly.

Though DuckDuckGo does do its own indexing, AFAIK it is limited and they mostly rely on other search engines (Bing and Yandex most probably). So it's more a meta-search engine not quite in the category of Google.

Today, I just posted a Show HN for a search engine and feed reader I've been working on. It also has "bangs" except they are called activation codes and start with a ?, like "?jq appendto". It's easy to add your own "?" handler, as it doesn't require any approval to do so. I'm just getting started so I would love to get any feedback.

Link to the Show HN: https://news.ycombinator.com/item?id=11174127