List of free database tool/service for developer👇🏽

Mongodb
The database for modern applications. MongoDB is a general purpose, document-based, distributed database built for modern application developers and for the cloud era.
Tag: database
NoSQL Mongo Database 512MB to 5GB of storage Shared RAM End-to-end encryption Built-in GUI for exploring and manipulating data

Mockaroo
A free test data generator and API mocking tool - Mockaroo lets you create custom CSV, JSON, SQL, and Excel datasets to test and demo your software.
Tag: database, mock-data
No daily limit on the number of files downloaded from the browser 200 API requests/day 1x speed Access to all of features Hosted on mockaroo.com
Json Server
Get a full fake REST API with zero coding in less than 30 seconds (seriously) with your own JSON file
Tag: API, database

Unlimited bases 1,200 records per base 2GB of attachments per base Grid, calendar, kanban, form, & gallery views

Azure Cosmos DB
Build applications on a fully managed, multi-master non-relational database service that offers support for NoSQL database APIs.
Tag: nosql, database
Always: 1000 request units/s with 5 GB storage
1 Year: 400 request units/s with 25 GB storage

Supabase
The Open Source Firebase Alternative Create a backend in less than 2 minutes. Start your project with a Postgres Database, Authentication, instant APIs, realtime subscriptions and Storage.
Tag: database, storage, authentication, real-time
Get free database, authentication and storage Unlimited API request Database space (Up to 500MB) Users 10.000 users Social Auth provider Storage Up to 1GB Transfer Limit Up to 2GB Team members: unlimited

Retool
Retool is the fast way to build internal tools. Drag-and-drop our building blocks and connect them to your databases and APIs to build your own tools, instantly. Connects with Postgres, REST APIs, GraphQL, Firebase, Google Sheets, and more. Built by developers, for developers. Trusted by startups and Fortune 500s. Sign up for free.
Tag: tool, CMS, database
Connect to most databases or REST APIs Editor mode only Query library Up to 5 modules

Appwrite
Appwrite provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.
Tag: API, database, storage, authentication, serverless
Open Source

Firebase
Firebase helps you build and run successful apps Backed by Google and loved by app development teams - from startups to global enterprises
Tag: database, hosting, hosting-dynamic, hosting-static, storage, authentication, real-time
Authentication 10k/month Cloud Firestore (stored data: 1 GiB total) Realtime Database (stored data: 1 GB) Hosting storage 10 GB Cloud storage 5 GB

Sheety
Turn spreadsheets into powerful APIs to rapidly develop prototypes, websites, apps and more.
Tag: API, database
Unlimited Projects Read, Write, Edit and Delete 200 requests per month 100 rows per sheet

HarperDB
HarperDB is a SQL/NoSQL data management platform. It is fully indexed, doesn’t duplicate data, and runs on any device- from the edge to the cloud
Tag: database
Check harperdb pricing page

PlanetScale
The database for developers PlanetScale is the only serverless database platform you can start in seconds and scale indefinitely.
Tag: database
3 free databases 10GB storage* 100 Million rows read/mo* 10 Million rows written/mo*

Heroku
Heroku is a container-based cloud Platform as a Service (PaaS). Developers use Heroku to deploy, manage, and scale modern apps. Our platform is elegant, flexible, and easy to use, offering developers the simplest path to getting their apps to market.
Tag: database, hosting-dynamic
550-1,000 dyno hours per month Deploy with Git and Docker Custom domains Container orchestration Automatic OS patching

25 GB of Storage 25 provisioned Write Capacity Units (WCU) 25 provisioned Read Capacity Units (RCU) Enough to handle up to 200M requests per month.

Deta
A Cloud for the Next Billion Ideas. Build your apps in hours, deploy them in seconds.
Tag: serverless, database, hosting
Server: Python 3.7 or Node.js 12.x Unlimited Micros (MicroServer) 128 MB of RAM for each execution An execution times out after 10s Unlimited NoSQL database
Directus
Open-Source Data Platform — Directus wraps any SQL database with a real-time GraphQL+REST API and an intuitive app for non-technical users. 100% JavaScript.
Tag: Database, SQL, GraphQL, API, CMS
Completely Free and Open-Source Works with any New or Existing SQL Database REST & GraphQL API Powerful Content/Data/Asset Management Completely Flexible Content Structure

DBeaver Community
Free multi-platform database tool for developers, database administrators, analysts and all people who need to work with database
Tag: database, dbms