NoSQL Databases
MongoDB - Cloudant - Cassandra/DataStax - MarkLogic - Aerospike - Couchbase - ElasticSearch - InfluxDB V2 - Tigergraph
Relational Databases
MySQL - Oracle - PostgreSQL - SQL Server
Data Warehouses
Redshift - Snowflake - Knowi Data Warehouse
File Based Data
CSV - JSON - Excel - Files on S3 - FTP - HTTP - Email Attachments
Other
Google Analytics - BigQuery - Salesforce - Google Analytics 4 - OpenAI - Quickbooks