
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 | foambubble.github.io | opalstack.com |
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| Company | Startup from the United States | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
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.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Foam and Opalstack. 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 / 4 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 / about 2 years ago
Tracking Opalstack since Sep 2023.
When comparing Foam and Opalstack, you can also consider the following products.

Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.
Compare Logseq to Foam or Opalstack:

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 Foam or Opalstack:

Nuclino works like a collective brain, helping teams bring all their knowledge, docs, and projects together in one place. It's a modern, simple, and blazingly fast way to collaborate.
Compare Nuclino to Foam or Opalstack:

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 Opalstack:

Trilium Notes is a hierarchical note taking application.
Compare Trilium Notes to Foam or Opalstack:
