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

Kinde
Metronome
Lago Billing
Credyt
Stigg
Autumn
OpenMeter
Usage-based and credit-based billing for AI, API and SaaS products. Meter events, rate usage, and invoice through Stripe or Paddle.
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 | codelet.co |
| Pricing | ||
| Company | — | Startup from Finland · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Mockaroo yet.
Codelet is a usage-based and credit-based billing infrastructure for SaaS and AI products. Meter events, track usage, and automatically invoice customers through Stripe or Paddle. Built for developers and SaaS companies that need flexible drop-in billing models beyond fixed subscriptions....
What each product offers, as listed by its team.

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.

As answered by people managing Mockaroo and Codelet Billing.
Codelet Billing's answer:
Indie hackers and small-to-medium teams requiring complex billing that isn't supported in Stripe or Paddle.
Codelet Billing's answer:
Codelet is built self-serve, with only a few API calls required to get set up. Agents can build full integrations in minutes. Codelet supports credit-based (prepaid) and usage-based (postpaid) billing on top of Stripe and Paddle, in any combination of pricing models, like graduated, flat-rate and stairstep. All in a simple platform that's quick and easy to set up and master.
Codelet Billing's answer:
Codelet is a drop-in API integration, which removes the complexity of a native billing system, and replaces with a few API calls. Pricing and billing can be managed from a simplified dashboard. Codelet runs on either Stripe or Paddle, giving flexibility for payments and Merchant of Record features.
Share your experience with using Mockaroo and Codelet Billing. 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
Tracking Codelet Billing since Aug 2026.
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Faker is a PHP library that generates fake data for you
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