Givero is described as 'is the search engine that cares. It shares its revenue with the charities you choose, so you can support your favorite cause simply by searching. Givero respects your privacy and offers instant answers and DuckDuckGo-compatible bangs' and is an app in the Web Browsers category. There are more than 50 alternatives to Givero for a variety of platforms, including Online / Web-based, Android, iPhone, iPad and Firefox. The best alternative is DuckDuckGo, which is free. Other great apps like Givero are Google Search (Free), searx (Free, Open Source), Qwant (Free) and Startpage (Free).
Founded in 1996 as the first ever German search engine, Fireball is a search engine from Munich, Germany which is operated by Fireball Labs GmbH. Fireball mainly relys on Bing results these days and Fireball is privacy-focused.
This is a simple but powerful feature that gives you access to several search engines using simple keywords. For example, you can search Wikipedia for information on monkeys by typing w monkeys in the address bar.