Question: Is there a customizable search tool that allows me to categorize and search by specific attributes like brand, color, or size?

Searchanise is an AI-powered site search and filter app for ecommerce sites. It has a simple, customizable search interface with Autocomplete, Suggestions and Instant Results. It's got facets for filtering, product recommendations and analytics, and Searchanise is pretty flexible, especially if you integrate it with e-commerce sites like Shopify and Magento.

Another option is HeyDay, which promises a more advanced search experience with AI-powered fast and relevant results. It's got autocomplete, spell check and categorization with attribute-based filtering, so it's good for e-commerce sites that want to make the shopping experience more useful. HeyDay charges by the search and the number of pages indexed, with a starting price of $0.25 per 1,000, and it's designed to use server resources efficiently and scale up or down.

If you want a more full-featured AI-powered search foundation, take a look at Algolia. It's got tools for fast, scalable and personalized search, including AI search, dynamic re-ranking and personalization. It's pretty flexible and good for lots of industries, and it's got a Pay-As-You-Go pricing option and dedicated plans, so it's good for businesses and developers.

Last, Searchspring offers ecommerce tools that integrate with Shopify and Magento to try to make the shopping experience better. It uses AI and machine learning for advanced search, merchandising and personalization, with features like AI site search, scalable merchandising and ML-powered personalization. The company's pricing is between $599 and $999 per month, depending on which features you want.