Another good choice is Rapid Search, which is geared for Shopify stores. It speeds up search with instant search, product filtering and merchandising. The app is designed to be quick to install and set up so you can get it running without a lot of technical expertise.
For a more sophisticated option, Searchspring integrates with e-commerce sites using Shopify and Magento. It offers advanced search, merchandising and personalization features with AI and machine learning. The company positions the service as a way to improve shopping experiences, reduce bounce rates and boost engagement.