
SQL Fiddle
DB Fiddle
Online SQL Editor
Rextester
Online SQL playground for testing and sharing SQL snippets. SQLite, MySQL and PostgreSQL.

DBeaver
DataGrip
SQL Developer
phpMyAdmin
Navicat
HeidiSQL
Sequel Pro
DbVisualizer is the universal database client and SQL tool built for developers, analysts, DBAs, data engineers, and anyone working with data.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | extendsclass.com | dbvis.com |
| Pricing | — | |
| Platforms | — | |
| Company | 2022 | Startup from Sweden · 20 - 49 employees · 2002 |
| Listed in |
In their own words, as submitted to SaaSHub.


It is a SQL playground which allows to test SQL online. Run SQL queries for SQLite, MySQL and PostgreSQL databases. Share snippets.
Key features in DbVisualizer include : A powerful SQL editor with intelligent autocomplete, visual query builders, variables, and query execution tools A built-in AI Assistant to ask questions, explain errors, and analyze code Built-in Git integration for managing SQL scripts and collaborating...
What each product offers, as listed by its team.


No features have been listed yet.
An editorial look at what each product does well and who it suits.


No analysis of ExtendsClass SQL Online yet.
Overall verdict
Why this product is good
Recommended for
DbVisualizer is recommended for database administrators, developers, and data analysts who work with multiple database systems and require a reliable, versatile tool for database management, performance optimization, and data analysis. It's especially useful for those who appreciate a unified, cross-platform solution with strong visualization capabilities.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using ExtendsClass SQL Online and DbVisualizer. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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DbVisualizer is a general purpose SQL client with 25 years of development and real support for PostgreSQL objects, not just generic JDBC support. It’s written in Java and runs on the JVM so the features are the same...
The best SQL GUI is the one that fits your team’s work. If you need to work with multiple database platforms, dbForge Edge has one of the most complete feature sets. DBeaver is great for mixed database environments ....
If you work across multiple databases, DBeaver and DbVisualizer are worth a look. Both support a wide range of database platforms and include visual query-building features.
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