Generate Data
DataConstruct
Beeceptor
Tonic AI
Fake Data
Smock-it
ExtendsClass JSON Generator
A realistic data generator to test your app

AI-powered Instagram story maker for creating professional story series. Upload photos and videos, get perfect text placement and interactive widgets.
Which is more popular?
Based on our record, Mockaroo seems to be more popular. It has been mentioned 27 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mockaroo.com | overvisual.com |
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Recommendations tracked on public social media and blogs since March 2021.

If you give it the rules to generate something, why can't it generate it? That's what something like Mockaroo[0] does. It's just more formal. That's pretty much what LLM training does, extracting patterns from a huge corpus of text. Then... - Source: Hacker News / over 1 year ago
A quick way to test this out is to use a tool like Mockaroo to generate some test data and then have a Glue Crawler analyse the data in S3 and create the required data catalog entries. - Source: dev.to / over 2 years ago
Mockaroo — Mockaroo lets you generate realistic test data in CSV, JSON, SQL, and Excel formats. You can also create mocks for back-end API. - Source: dev.to / over 2 years ago
Tracking Overvisual since Dec 2025.
When comparing Mockaroo and Overvisual, you can also consider the following products.

GenerateData.com: free, GNU-licensed, random custom data generator for testing software
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Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.
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A form filler extension with a lot of features
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Smock-it is a powerful CLI tool designed to simplify test data generation for Salesforce. A lightweight alternative to Mokraoo, it helps developers and QAs quickly generate, manage, and customize data for seamless testing and streamlined workflows.
Compare Smock-it to Mockaroo or Overvisual: