Searchkick vs Carrot2: What are the differences?

Developers describe Searchkick as "Intelligent search made easy". Searchkick learns what your users are looking for. As more people search, it gets smarter and the results get better. It’s friendly for developers - and magical for your users. On the other hand, Carrot2 is detailed as "An Open Source Search Results Clustering Engine". It organizes your search results into topics. With an instant overview of what's available, you will quickly find what you're looking for.

Searchkick and Carrot2 belong to "Search Engines" category of the tech stack.

Some of the features offered by Searchkick are:

• stemming - tomatoes matches tomato
• special characters - jalapeno matches jalapeño
• extra whitespace - dishwasher matches dish washer

On the other hand, Carrot2 provides the following key features:

• Visualization
• Clustering
• Integration

Searchkick and Carrot2 are both open source tools. It seems that Searchkick with 5.03K GitHub stars and 592 forks on GitHub has more adoption than Carrot2 with 377 GitHub stars and 155 GitHub forks.