
ZeroFOX
Katcher
DoppelDown
AgentProxy.au
PhishEye
Red Points
Bustem
By pairing cutting-edge AI with expert analysis, we outpace threats like phishing, impersonation, and disinformation—delivering comprehensive coverage, speed, and precision.

Logseq
Obsidian
Zim Wiki
Nuclino
Trilium Notes
TiddlyWiki
Roam Research
Personal knowledge management and sharing on VSCode & GitHub

Which is more popular?
Based on our record, Foam seems to be more popular. It has been mentioned 49 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | doppel.com | foambubble.github.io |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 250 - 499 employees | Startup from the United States |
| Listed in |
In their own words, as submitted to SaaSHub.


Our AI-native platform unifies threat intelligence, automates takedowns, simulates attacks, and trains employees against today’s most sophisticated multi-channel deception campaigns.
No description of Foam yet.
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.
Doppel: Outpacing What’s Next in Social Engineering
These panels DESTROYED my STUDIO....REVERB? - ArrowZoom Foam Review
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Doppel.com and Foam.
Doppel.com's answer
AI-native platform unifies threat intelligence, automates takedowns, simulates attacks, and trains employees against today’s most sophisticated multi-channel deception campaigns.
Share your experience with using Doppel.com and Foam. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Doppel.com since Jan 2026.
Choose a local Markdown tool like Obsidian, Logseq, Foam, or Tolaria to store all your knowledge as plain .md files you own and control. - Source: dev.to / 6 months ago
I've been using foam instead of obsidian for my personal knowledge base. It works rather well. And it's completely free and ultimately just markdown. While I might wish it was djot, I don't wish hard enough to make that so myself... - Source: Hacker News / about 2 years ago
I gave up on Obsidian and just use Foam (https://foambubble.github.io/foam/) and/or vimwiki. I just can’t get into overwrought, arbitrarily designed organization schemes or proprietary apps (Foam-managed content is just plain Markdown,... - Source: Hacker News / over 2 years ago
When comparing Doppel.com and Foam, you can also consider the following products.

ZeroFOX is a social risk management tool that enables organizations to identify, manage and mitigate social media based cyber threats.
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Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.
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A free scan finds storefronts using your brand name, photos and product text. Each one comes with dated evidence you can check. We close it, or you do.
Compare Katcher to Doppel.com or Foam:

A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
Compare Obsidian to Doppel.com or Foam:
AI-powered detection of fake domains, phishing sites & brand impostors. Free tier included. Results in minutes, not weeks.
Compare DoppelDown to Doppel.com or Foam:

Zim is a graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images.
Compare Zim Wiki to Doppel.com or Foam: