
Logseq
Obsidian
Zim Wiki
Nuclino
Trilium Notes
TiddlyWiki
Roam Research
Personal knowledge management and sharing on VSCode & GitHub
Droplana
FileInvite
Content Snare
Suralink
DokuTrak
Clustdoc
Onehub
End-to-end encrypted cloud storage: every file and filename is encrypted on your device. 10 GB free, or 5 TB for €249 paid once until 30 Nov 2026, then €299. Firms can also collect client documents with one link.

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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SF
ShieldFive
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| Website | foambubble.github.io | shieldfive.com |
| Pricing | ||
| Company | Startup from the United States | Startup from Spain · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Foam yet.
ShieldFive is end-to-end encrypted cloud storage. Every file and its name is encrypted in your browser before upload, with an ML-KEM-1024 post-quantum layer on new uploads by default, so ShieldFive stores only ciphertext and never holds your keys. Plans: 10 GB free with no card; 1, 2 or 5 TB...
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
No analysis of ShieldFive yet.
Walkthroughs and reviews on video.
These panels DESTROYED my STUDIO....REVERB? - ArrowZoom Foam Review
More videos
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Foam and ShieldFive. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

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
Tracking ShieldFive since Aug 2026.
When comparing Foam and ShieldFive, you can also consider the following products.

Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.
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A client document portal for easy, secure two-way document exchange. Give every client one persistent place for files, comments and PDF signing - no client accounts required.
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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.
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Stop chasing your customers for documents FileInvite's secure document collection software automates document collection workflows so you can unlock revenue faster.
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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 Foam or ShieldFive:

Document collection for accounting firms, mortgage brokers, law firms, and professional services. Auto-saves, auto-reminds, ISO 27001 certified.
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