
Mockaroo
DataConstruct
Data Creator
Datamade
Random Data
Generate and manage synthetic datasets easily with DUMMY DATABASE
SQL Fiddle
ExtendsClass SQL Online
DB Fiddle
V (programming language)
Online SQL Editor
explainshell
db<>fiddle
Online compiler for many languages, including MySQL

Which is more popular?
Based on our record, Rextester seems to be more popular. It has been mentioned 7 times since March 2021.
Website, pricing, platforms and company facts side by side.
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Rextester
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| Website | dummydatabase.com | insurance.rextester.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Serbia · 1 - 9 employees · 2024 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

Dummy Database is built to solve a simple, yet annoying problem — generating realistic test datasets quickly, without writing scripts or juggling Excel files. It’s designed for: - Developers needing dummy databases for prototyping & testing. - Analysts and BI specialists preparing demo...
No description of Rextester yet.
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.

Overall verdict
Why this product is good
Recommended for
No analysis of Rextester yet.
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing DUMMY DATABASE and Rextester.
DUMMY DATABASE's answer
A free, all-in-one data generation platform that builds everything from simple tables to full relational databases with advanced controls, unique event sequences, ERD visualization, built-in SQL querying, and multiple export formats — no limits, no paywalls.
DUMMY DATABASE's answer
Unlike other data generators, DUMMY DATABASE gives you full relational database creation, unique event simulations, advanced control over every field, built-in SQL querying, and generous free limits — so you can go from idea to test-ready data without restrictions, subscriptions, or hidden fees
DUMMY DATABASE's answer
DUMMY DATABASE's answer
Began as a project for myself to be able to have custom datasets for testing purpose I've decided that it could be useful for wider audience and finalized it as a full-stack web project
DUMMY DATABASE's answer
Python, Flask, HTML, CSS, Bootstrap, Redis, PostgreSQL, JavaScript
Share your experience with using DUMMY DATABASE and Rextester. 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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It supports around 30 languages including Java, but it is more popular among C# users. Rextester started as a Regular Expression Tester, later grew to be an online IDE.
Recommendations tracked on public social media and blogs since March 2021.

Tracking DUMMY DATABASE since Aug 2025.
My Professor has not provided any resources or material to help complete this project, I have tried to problem solve, use the internet, even chatgpt. (I can send the code that it gave me in comments if needed, but ) I need help... Source: over 3 years ago
Does it really do that? (I've just tried in rextester.com, it complains about declared but unused variables.). Source: over 3 years ago
(A quick survey of some of the languages at rextester.com showed that they are usually counted from 1. I'd suggest doing the same would be least surprising.). Source: over 4 years ago
When comparing DUMMY DATABASE and Rextester, you can also consider the following products.
A realistic data generator to test your app
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A tool for easy online testing and sharing of database problems and their solutions.
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Online SQL playground for testing and sharing SQL snippets. SQLite, MySQL and PostgreSQL.
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Data generator that can create a table filled with pseudo-random content.
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An online tool for testing, sharing and collaborating on SQL snippets
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