hassly in an e-commerce website with tailor made search engine specifically designed for e-commerce. The website includes autocomplete, search relevancy, will return you the results you wanted even if there are errors (such as typos) in your search.
Uses mongodb atlas search.
See github readme for more
website demo: https://hassly.herokuapp.com/
The github readme will tell you everything you need to know
Mongodb, Mongodb Atlas Search, Mongoose