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

PixScript
Descript
Auto Subtitle Generator
EasySub
GeekLink.dev
Kapwing
Otter.ai
Captioner is an AI subtitle generator and editor for your videos. Add accurate subtitles to your videos and save hours of work. Upload your videos and edit right on your browser.

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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Mockaroo
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| Website | mockaroo.com | captioner.io |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Singapore · 1 - 9 employees · 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Mockaroo yet.
Add Accurate Subtitles to your Videos Add accurate subtitles to your videos and save hours of work. Upload your videos and edit right on your browser. Translate your subtitle into another language with a single click. Get subtitle file for your YouTube video or download the video with subtitles...
What each product offers, as listed by its team.

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

No analysis of Mockaroo yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Best Free Sample Data Generator - Mockaroo.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 Captioner.io since Jun 2025.
When comparing Mockaroo and Captioner.io, you can also consider the following products.

GenerateData.com: free, GNU-licensed, random custom data generator for testing software
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Paste a YouTube, TikTok, or Instagram URL and get the full transcript with timestamps. Export as SRT subtitles, plain text, or PDF. AI summaries, rewriting, and 50+ language translation built in. Free to start.
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Faker is a PHP library that generates fake data for you
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Text-based audio editor and automated transcription
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Generate, edit, style, and export accurate video subtitles with no watermark—even on the free plan.
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