We performed a comparison between MongoDB and OpenSearch based on real PeerSpot user reviews.
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MongoDB is ranked 5th in Open Source Databases with 69 reviews while OpenSearch is ranked 14th in Open Source Databases. MongoDB is rated 8.2, while OpenSearch is rated 0.0. The top reviewer of MongoDB writes "Lightweight with good flexibility and very fast performance for searching data". On the other hand, MongoDB is most compared with InfluxDB, Couchbase, ScyllaDB, Oracle NoSQL and Cassandra, whereas OpenSearch is most compared with Pinecone, Faiss, Milvus and Redis.
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