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

LetterWell
Newsletters by Refind
Hecto
Nuzzel's Network of Newsletters
LetterHunt
Swapstack
Inside.com
First marketplace for buying and selling Newsletters.
Which is more popular?
Based on our record, Mockaroo seems to be a lot more popular than Duuce. While we know about 27 links to Mockaroo, we've tracked only 1 mention of Duuce.
Website, pricing, platforms and company facts side by side.
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| Website | mockaroo.com | duuce.com |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
Best Free Sample Data Generator - Mockaroo.com
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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 Duuce. 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 / over 2 years ago
Nice. You should check out duuce.com. It's a marketplace for selling newsletters. Source: over 3 years ago
When comparing Mockaroo and Duuce, you can also consider the following products.

GenerateData.com: free, GNU-licensed, random custom data generator for testing software
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The easiest way to email a link digest to your fans
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A platform to buy, sell and manage newsletter advertisements
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