Apache Nutch is a special computer program that can go to different websites and look for information. Imagine you have a big book that has many pages and you want to find a specific word. Apache Nutch can help you do that.
First, it "crawls" the website, which means it looks at every page on the website and makes a list of them. Once it has a list of all the pages, it goes through them one by one and tries to extract information, like words, pictures, and links to other pages. Think of it like a monkey climbing trees to find bananas.
This information is then stored in a big database, or storage place, so that you can easily search for it later. It’s like putting all the bananas you find into a big basket.
Apache Nutch is famous because it can help people search the internet for the right information quickly and efficiently. Just like how you can find your favorite toy quickly if it's stored in a special place in your room. It is also very flexible so that programmers can change and adjust it to specific needs.