RabbitMQ is an open-source message-broker software that originally implemented the Advanced Message Queuing Protocol.

RabbitMQ

DynamoDB

Oracle NoSQL

Db2 is a RDBMS which was initially designed to work on Mainframe Platforms for Banking Applications, later ported to work on other operating systems like Windows, Linux also

IBM Db2

Snowflake

Twig

Microsoft Azure SQL Database is the cloud-based version of Microsoft SQL Server which is presented as a platform as a service offering on Microsoft Azure.

Azure SQL Database

Realm

Prometheus

HBase

Jade

CouchDB is open source NoSQL database developed by apache

CouchDB

Teradata

Memcached

NoSQL

Document

Key-Value

Document store

Key-value store

ORDMS

Search Engine

Index

JSON

Document Store

RDBMS

Cross-platform

Mainframe

z/OS

Time Series

scalable

analytics

Graph

ACID

ORDBMS

Attachment

Message Queue

Message Broker

Pub-Sub

Caching

Nosql

hypertables

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