Dremio is a startup founded in 2015 by experts in big data and open source. It aims to provide a platform for interactive analysis across disparate data sources through a storage-agnostic and client-agnostic approach leveraging Apache Arrow for high performance in-memory columnar execution. Dremio uses Apache Drill as its query engine, allowing users to query data across different systems like HDFS, S3, MongoDB as if it was a single relational database through SQL. It has an extensible architecture that allows new data sources to be easily added via plugins.