
Roll20
Dungeondraft
Owlbear Rodeo
Inkarnate
D&D Beyond
Astral Tabletop
Fantasy Grounds
A self-hosted, modern, and developer-friendly roleplaying platform.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Which is more popular?
Based on our record, Foundry Virtual Tabletop seems to be more popular. It has been mentioned 320 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | foundryvtt.com | diffyn.com |
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What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
What is Foundry VTT? - First Impressions of Foundry Virtual Tabletop
The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Foundry Virtual Tabletop and Diffyn.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Share your experience with using Foundry Virtual Tabletop and Diffyn. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


As a passionate Dungeons & Dragons player and tech enthusiast, I decided to elevate my game setup by creating a custom coffee table that features an embedded screen. This table displays maps, tokens, plays sound effects, and even shows... - Source: dev.to / about 2 years ago
If you're ready to spend money, though, I'd suggest Foundry. I recommend Foundry for these reasons:. Source: almost 3 years ago
Salutations, lost souls. What's happening: On the 10th of December, at 11:00 UTC+0, I'll be running a simple one-shot to test run the Advanced 5th Edition system by Level Up, using Foundry. It is essentially a fully rewritten,... Source: almost 3 years ago
Tracking Diffyn since Jun 2025.
When comparing Foundry Virtual Tabletop and Diffyn, you can also consider the following products.

Roll20 is a suite of easy-to-use digital tools that expand pen-and-paper gameplay.
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Dungeondraft is an interesting map development software that is used to create quick maps for your games and it is compatible with Windows as well as Mac OS operating systems.
Compare Dungeondraft to Foundry Virtual Tabletop or Diffyn:

Owlbear Rodeo is an attempt to make a web app to run tabletop encounters without the complicated setup process needed for other VTTs.
Compare Owlbear Rodeo to Foundry Virtual Tabletop or Diffyn:

A free-form map editor for role-playing games, focusing on overland and continental maps.
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Official online toolset for Dungeons & Dragons tabletop gaming
Compare D&D Beyond to Foundry Virtual Tabletop or Diffyn:

Create, host, and manage your tabletop role-playing games — online or in person
Compare Astral Tabletop to Foundry Virtual Tabletop or Diffyn: