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: software
Pricing: Freemium
Description: Titan is an open-source, distributed graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. It is highly scalable and provides real-time data access through a transactional database.
Type: software
Pricing: Open Source