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

Calendar With Islamic Dates
Omni Calculator
calculator.net
CalCon Calculator
CalculatorSpan
Time Calc
Calculate date differences, business days, deadlines, sleep windows and recurring spans. CalcSpan shows the assumptions and sources behind each result.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | extendsclass.com | calcspan.com |
| 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 CalcSpan yet.
What each product offers, as listed by its team.


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 CalcSpan. For example, how are they different and which one is better?
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A realistic data generator to test your app
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Calendar With Islamic Dates is an elegant mobile application introduced by IslamGhar that provides you the Islamic calendar with the list of important dates and events.
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Create mock and sample JSON using a powerful template syntax
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Helping you make rational decisions, one calculation at a time.
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Generate realistic random JSON data through a simple and intuitive GUI.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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