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Hosted search-as-a-service platform delivering real-time, full-text search for apps and websites
Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Scalable search and observability platform for unstructured data
OpenSearch delivers a distributed, RESTful search and observability suite that handles large‑scale unstructured data with Elasticsearch‑compatible APIs, all under an Apache‑2.0 license.
OpenSearch is a distributed, enterprise‑grade search and observability engine designed to bring order to massive volumes of unstructured data. Built in Java and exposing a RESTful API, it offers full compatibility with Elasticsearch query syntax, enabling seamless migration and integration with existing tooling.
The platform can be deployed on‑premises, in containers, or via managed cloud services. Its modular architecture supports plugins for analytics, security, and alerting, allowing organizations to tailor the stack to specific workloads such as e‑commerce search, log aggregation, or business intelligence. Comprehensive documentation, community forums, and Slack channels provide guidance for scaling clusters, tuning performance, and extending functionality.
OpenSearch’s Apache‑2.0 license encourages collaboration and innovation while ensuring freedom to modify and redistribute the software for commercial or private use.
When teams consider OpenSearch, these hosted platforms usually appear on the same shortlist.
Hosted search-as-a-service platform delivering real-time, full-text search for apps and websites
Managed search service to index and query text & structured data
AI-powered enterprise search service that indexes and searches across various content repositories with natural language queries
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
E‑commerce Product Search
Delivers fast, relevant results across millions of catalog items, improving conversion rates.
Log Aggregation & Monitoring
Aggregates logs from distributed services, enabling real‑time alerts and visualizations.
Enterprise Document Search
Indexes internal documents, emails, and knowledge bases for instant retrieval by employees.
Business Intelligence Analytics
Provides faceted search and aggregation capabilities for large data warehouses.
OpenSearch is primarily written in Java.
Yes, it implements Elasticsearch‑compatible REST APIs, allowing most Elasticsearch clients and tools to work unchanged.
OpenSearch is released under the Apache‑2.0 license.
Yes, the platform supports a plugin architecture for analytics, security, and other extensions.
Project at a glance
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