Elasticsearch: Open-source distributed search and analytics engine built on Lucene for speed, scalability, and ease of use. Used by e-commerce, news, and government organizations. Check license for your use case. github.com/elastic/elas...

Meilisearch: Open-source, lightning-fast search engine for speed, accuracy, ease of use, and customization. Integrate search into your website or application easily. github.com/meilisearch/...