
Mockaroo
JSON Generator
MockTurtle.net
ExtendsClass's JSON generator allows to generate random JSON data from a template.

PredictIt
Polymarket
Bloomberg Professional
Smarkets
Kalshi
Kresmion
CALLOUT Market
Discover, compare and trade prediction markets across Polymarket and Kalshi. Live odds, cross-venue price comparison, and AI-powered market intelligence.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | extendsclass.com | ipredicta.co |
| Pricing | ||
| Company | 2019 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


This free online tool allows to generate JSON dataset. You can generate multiple JSON files exported to a zip archive. No limits. No registration.
No description of iPredicta yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using ExtendsClass JSON Generator and iPredicta. For example, how are they different and which one is better?
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Bet on current events. Get tomorrow's news, today.
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Generate realistic random JSON data through a simple and intuitive GUI.
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Bloomberg Professional app helps users send live text messages to their fellow traders and investors to get suggestions and tips from them to solve all their problems.
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