Google Cloud PostgreSQL - Fully-managed database service
Mongoku - A neat Web-based GUI for MongoDB
Supabase - An open source Firebase alternative
MongoLab - MongoLab is a fully managed MongoDB Database-as-a-Service platform that automates the operational aspects of running MongoDB in the cloud.
Slack SQL - Execute SQL queries inside of Slack
DBngin - Free all-in-one database version management tool 🛠️