
GreetPool
Silly Robot Cards
Group Greeting
Kudoboard
RingleDingle
Sendwishonline
Thankbox
Create online group cards such as birthday cards, leaving cards or thank you cards that multiple people can sign. Choose from thousands of cards and add videos, gifs or photo messages easily.

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

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | joyogram.com | extendsclass.com |
| Pricing | ||
| Company | Startup from the United States · 2025 | 2019 |
| Listed in |
In their own words, as submitted to SaaSHub.


Joyogram is an online group card service that collect ecard style messages individually or as a group to send digitally. Perfect for birthdays, leaving / retirements in a company, good luck messages, congratulation cards, get well soon card or any other type of greeting or occasion.
This free online tool allows to generate JSON dataset. You can generate multiple JSON files exported to a zip archive. No limits. No registration.
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of ExtendsClass JSON Generator yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Joyogram and ExtendsClass JSON Generator.
Joyogram's answer
We have used several services like this but never found one easy to use without an app needed, and allowing us to send beautiful group cards online that were not cheesy!
Joyogram's answer
Our online group cards are beautiful and modern, nothing tacky here!
Joyogram's answer
Our pricing allows unlimited access to everything!
Joyogram's answer
Companies that want to celebrate coworkers / staff as a group
Joyogram's answer
NextJS / Vercel
Joyogram's answer
Amazon, Salesforce, to name a few!
Share your experience with using Joyogram and ExtendsClass JSON Generator. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


heir cards are really modern and website is super easy to use, we use it all the time to send online cards in our company.
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