• https://realpython.com/python-sql-libraries/

1. Postgres
2. ElasticSearch
3. Neo4J
4. Cassandra

• Apache Druid - Apache Druid (incubating) is a high performance analytics data store for event-driven data.
• Apache Pinot (Incubating) - A realtime distributed OLAP datastore
• Apache Kylin - Apache Kylin is an open source Distributed Analytics Engine, contributed by eBay Inc., provides SQL interface and multi-dimensional analysis (OLAP) on Hadoop supporting extremely large datasets.
• [AtScale] - Not Open Source

• Snowflake - Snowflake is an analytic data warehouse provided as Software-as-a-Service (SaaS)
• Amazon Redshift
• Google BigQuery

Advantages: Joins, ...

• Looker
• Sisense
• panoply
• Pivot - data cubes and dashboards
• Turnilo - open source Pivot
• PowerBI

Provides Querying and Dashboarding options all in one.

• Dask
• Apache Spark
• Apache Flink
• Apache Kafka

• Apache Airflow (created in Airbnb)
• Luigi (created in Spotify)
• Azkaban (created in LinkedIn)
• Apache Oozie (for Hadoop systems)

• Ruby with Postgres