
Description: RxDB is an open-source, reactive database for JavaScript applications. It is indexedDB/WebSQL under the hood but brings a NoSQL interface with queries, schemas, sync and much more to the front-end browser environment.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: RestDB.io is a fast and simple NoSQL cloud database service for serverless applications. It allows storing and querying document-oriented data via a RESTful API, with free and paid tiers available.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API