Best Websites for website similarity

Similarsites is a Recommendation Engine that helps users find similar websites based on related content, web structure, link analysis algorithms, user surfing behaviors, and a large community of user rankings. It uses over 20 unique similarity engines to analyze a website's inside and outside, categorizing it with a large index of data to provide the best and most relevant results. 

Sitelike is a free and user-friendly search tool that helps users find similar websites, alternatives, or related to a given site. It uses keyword overlap and shared audience to rank and find the best websites. The tool collects and combines information from various sources, using an internal algorithm to analyze website content and various web sources.