
Mockaroo
DataConstruct
Data Creator
Datamade
Random Data
Generate and manage synthetic datasets easily with DUMMY DATABASE

Celestia
Stellarium
OpenSpace
Mitaka
WorldWide Telescope
Solar Model
Universe Sandbox
Space Engine is a realistic virtual Universe you can explore on your computer.

Which is more popular?
Based on our record, Space Engine seems to be more popular. It has been mentioned 125 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | dummydatabase.com | spaceengine.org |
| 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 Space Engine yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Space Engine is highly recommended for astronomy enthusiasts, educators, students, and space exploration hobbyists. It's also a great tool for science communicators and content creators looking to visualize and explain space phenomena.
Walkthroughs and reviews on video.
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Why You Should Try Space Engine (The Best Damn Space Sim in the Galaxy)
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DUMMY DATABASE and Space Engine.
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 Space Engine. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking DUMMY DATABASE since Aug 2025.
SpaceEngine is also known for putting quite some effort into this; highly recommended: https://www.youtube.com/watch?v=_4TjdVAbXks https://spaceengine.org/. - Source: Hacker News / 5 months ago
I think https://spaceengine.org/ fills part of your request. I haven't played it but I've watched videos about it and it looks like you can jump anywhere around the observable universe and look at any object you want. - Source: Hacker News / almost 2 years ago
Https://spaceengine.org/ , though it’s partially fictional if I recall correctly. - Source: Hacker News / over 2 years ago
When comparing DUMMY DATABASE and Space Engine, you can also consider the following products.
A realistic data generator to test your app
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Stellarium is a free open source planetarium for your computer.
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Data generator that can create a table filled with pseudo-random content.
Compare Data Creator to DUMMY DATABASE or Space Engine:

OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.
Compare OpenSpace to DUMMY DATABASE or Space Engine: