
Description: Xapian is an open source search engine library that allows developers to add advanced searching capabilities to their applications. It supports features like full text and boolean search, spelling correction, query expansion, relevance ranking, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Elasticsearch is a popular open-source search and analytics engine built on Apache Lucene. It provides a distributed, multitenant capable full-text search engine with an HTTP web interface and schema-free JSON documents.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API