# Databases

## Table of Contents

## In-memory

1. [Redis](https://redis.io)
2. [Memcached](https://memcached.org/)

## Documental

1. [MongoDB](https://www.mongodb.com)

## Relational

1. [SQLite](https://www.sqlite.org)
2. [PostgreSQL](https://www.postgresql.org)

## Search Engine

1. [ElasticSearch](https://www.elastic.co)