A database serves as the foundation for collecting, processing, and displaying data. Whether for a website, an app, or internal business processes, databases summarize information and facilitate management.
The good news is: You don’t always need programming skills to create and work with a database.
Today, many online databases have the advantage of being both free and easy to use. Some are designed for developers (SQL-based), while others offer visual interfaces for business users. In this article, we compare the 10 best free online databases available in 2026.
What types of online databases are there?
Online databases generally fall into two categories:
- Infrastructure Databases (SQL/NoSQL): These are “raw” databases like MySQL or PostgreSQL hosted in the cloud. They are powerful but require technical knowledge (SQL) to manage and usually need a separate frontend application to be useful.
- No-Code / Visual Databases: These look like spreadsheets but act like databases. They come with a built-in user interface, forms, and views (Kanban, Calendar, Gallery). They are perfect for Project Management, CRM, and Inventory Management without writing code.
The Top 10 Free Online Databases
Here is an overview of ten well-known databases that are available free of charge, either as a permanent free tier or a generous trial.
1. AITable.ai
AITable.ai is a visual database that combines the ease of a spreadsheet with the power of a relational database. It is designed for both individuals and teams who want to organize data without coding.
The interface is intuitive: you can link records between tables, switch views (Grid, Kanban, Gantt, Calendar), and even use AI to analyze your data. It is a modern alternative to Excel and Airtable, with a generous free tier that includes API access and automation features.
Best for: Project management, CRMs, and anyone who wants a “database that looks like a spreadsheet.”
2. Amazon RDS (Relational Database Service)
For developers, Amazon RDS is a go-to solution. It offers a free tier (12 months) that allows you to run industry-standard databases in the cloud, including:
- MySQL
- PostgreSQL
- MariaDB
- SQL Server Express
You get 750 hours per month of usage and 20 GB of storage. It is ideal for testing applications or learning how to manage cloud infrastructure.
Best for: Developers and students learning SQL or hosting app backends.
3. Google Cloud SQL
Similar to Amazon, Google Cloud offers a free tier for its database services. It supports MySQL, PostgreSQL, and SQL Server.
The “Always Free” usage limits (e.g., on Compute Engine) allow you to run small database instances for side projects without incurring costs, provided you stay within the limits.
Best for: Applications already hosted in the Google ecosystem.
4. Microsoft SQL Server
Microsoft offers powerful options for free database management:
- SQL Server Express: A free, feature-rich edition of SQL Server ideal for learning and building desktop and small server applications.
- Azure SQL Database: A fully managed cloud database that offers a free amount of resources for the first 12 months.
Best for: Enterprise environments and .NET developers.
5. Oracle Database
Oracle offers an “Always Free” cloud tier that is surprisingly generous. It includes two Oracle Autonomous Databases with powerful tools like Oracle APEX (Application Express) and Oracle SQL Developer Web. This is a robust option for those who need enterprise-grade reliability for free.
Best for: Learning enterprise database management and data warehousing.
6. MongoDB Atlas
If you need a NoSQL database (storing data as JSON-like documents instead of rows and columns), MongoDB Atlas is the market leader. Their free cluster (M0 Sandbox) gives you 512 MB of storage forever. It is perfect for modern web applications built with Node.js or React.
Best for: Web developers building flexible, document-based apps.
7. Airtable
Airtable popularized the “low-code database” category. It offers a colorful, friendly interface with many templates. The free plan allows for unlimited bases but limits you to 1,000 records per base. It integrates well with many third-party tools like Zapier and Slack.
Best for: Small creative teams and simple tracking needs.
8. Knack
Knack focuses on turning your data into a simple web app. You start by defining your data structure, and Knack automatically builds a frontend for you (with search, forms, and logins). While it is primarily a paid tool, it offers a trial period to build and test your database apps.
Best for: Building internal business apps with customer portals.
9. Zoho Creator
Part of the massive Zoho ecosystem, Zoho Creator is a low-code platform for building custom applications. The free plan is limited (typically 1 user) but allows you to build a functional app with mobile support. It is great if you already use other Zoho products like Zoho CRM.
Best for: Single users needing a custom mobile app for data entry.
10. TeamDesk
TeamDesk is a veteran in the online database space. It emphasizes simplicity and speed. You can start from a template or build from scratch. It creates a straightforward business application for your data. Like Knack, it is trial-based but highly effective for non-technical business owners.
Best for: Business owners who want a no-nonsense data tool.
Conclusion: Which free database is right for you?
Choosing the right database depends on your technical skills and your goals:
- For Developers: If you are building a software application and know SQL, go with Amazon RDS or MongoDB Atlas.
- For Business & Teams: If you need to manage projects, customers, or inventory without writing code, a visual database is the better choice.
Why start with AITable.ai?
Among the visual options, AITable.ai offers a modern balance of power and ease of use. It allows you to organize any data—files, images, text, and numbers—in a familiar spreadsheet view, but with the capabilities of a robust relational database.
You can sign up for the free plan to see how easy data management can be in 2026.