OpenSearch

OpenSearch is a scalable, flexible, and extensible open-source software suite for search, analysis, and monitoring applications, which is licensed under Apache 2.0. It is aimed at users who want to create secure, powerful, and cost-effective applications. The essential features of OpenSearch include powerful search solutions, large-scale analysis and discovery capabilities, and end-to-end monitoring capabilities. The pricing model of OpenSearch is not explicitly stated as it is an open-source software.