Dadroit JSON Viewer
Jayson
ExtendsClass JSON Generator
MockTurtle.net
Fullstack Vue
Mockaroo
DevToys
Create mock and sample JSON using a powerful template syntax
OpenStreetMap
Open Data Inception
Our World In Data
London Datastore
Work With Data
PublicAPIs
Premise
Instant access to all* open data from a single place

Which is more popular?
Based on our record, JSON Generator seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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JSON Generator
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Vacuum Data
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| Website | json-generator.com | tryvacuum.com |
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What each product offers, as listed by its team.
Possible disadvantages
No features have been listed yet.
How often each product is chosen within a category, 0–100% relative to the other.
Share your experience with using JSON Generator and Vacuum Data. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.
JSON Generator: also generates mock data, but for JSON specifically. It's a bit more complex, but it allows for tailor-made results. - Source: dev.to / almost 3 years ago
Is there a generator for all the JSON generators out there? https://json-generator.com/. - Source: Hacker News / about 3 years ago
So I generated a random JSON file and tried parsing it. It doesn’t error, but whenever I do a println(root.Object().Value().String()), I get a panic: wrong type. If I do a println(root.Object().Present()), it prints false. So seems like... Source: over 3 years ago
Tracking Vacuum Data since Mar 2021.
When comparing JSON Generator and Vacuum Data, you can also consider the following products.

Open a 1GB JSON file in a blink 💣
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OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
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2700+ Open data portals around the World
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ExtendsClass's JSON generator allows to generate random JSON data from a template.
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A web publication showcasing empirical research and data
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