Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.

Mongoku - A neat Web-based GUI for MongoDB

Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.

DBngin - Free all-in-one database version management tool 🛠️

QuickBase - Quickbase provides a no-code operational agility platform that enables organizations to improve operations through real time insights and automation across complex processes and disparate systems. ​​

MongoLab - MongoLab is a fully managed MongoDB Database-as-a-Service platform that automates the operational aspects of running MongoDB in the cloud.