Angolia

The best Search and Discovery Platform for your business Algolia empowers Builders with the Search and Recommendation services they need to build world-class experiences. https://www.algolia.com

Zinc

While Elasticsearch is a very good product, it is complex and requires lots of resources and is more than a decade old. I built Zinc so it becomes easier for folks to use full text search indexing without doing a lot of work. https://github.com/prabhatsharma/zinc

Meilisearch

https://www.meilisearch.com Shape a delightfulsearch experience in a snap An open-source, lightning-fast, and hyper-relevant search engine that fits effortlessly into your apps, websites, and workflow.