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

MockTurtle.net
MockBlast
Random Data
SQLable
DDL to Data
dbForge Data Generator for MySQL
JSON Generator
Realistic multi-table test data with foreign keys intact. Every dataset's first 20,000 rows are free, no credit card. Design visually or in plain English, then export to 7 SQL dialects, CSV, JSON, JSONL and Parquet.

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 | synthforge.io |
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What each product offers, as listed by its team.

Possible disadvantages
No features have been listed yet.
Walkthroughs and reviews on video.
Best Free Sample Data Generator - Mockaroo.com
More videos
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Mockaroo and SynthForge IO. For example, how are they different and which one is better?
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 / almost 3 years ago
Tracking SynthForge IO since Nov 2026.
When comparing Mockaroo and SynthForge IO, you can also consider the following products.

GenerateData.com: free, GNU-licensed, random custom data generator for testing software
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Generate realistic random JSON data through a simple and intuitive GUI.
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A form filler extension with a lot of features
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