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

opencode
warp by spolu
Claude Code
Ghostty
Cursor
Google Antigravity
OpenAI Codex CLI
The coding-agent harness you can make your own

Which is more popular?
Foam might be a bit more popular than Pi Coding Agent. We know about 49 links to it since March 2021 and only 41 links to Pi Coding Agent.
Website, pricing, platforms and company facts side by side.
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| Website | foambubble.github.io | pi.dev |
| Pricing | — | |
| 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.
These panels DESTROYED my STUDIO....REVERB? - ArrowZoom Foam Review
More videos
Pi Coding Agent is now my absolute favorite...
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Foam and Pi Coding Agent. 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
1) Kagi Ultimate. I don't use any subscriptions for agentic coding, just search. I evaluated using Perplexity Pro for a while, paying for both subscriptions at the same time for a few months. I find it hard to describe the experience of... - Source: Hacker News / 9 days ago
Models: I pay Z.ai a lite sub which costs me ~9USD/month and for the last months I've been using `glm-5.3-flash` amost exclusively for my day-to-day. I also make use of free models from OpenRouter for simple CI/CD automated stuff but... - Source: Hacker News / 9 days ago
The usual advice here is to give a local agent a very light harness. For example pi, whose system prompt is about 2k tokens. - Source: dev.to / 9 days ago
When comparing Foam and Pi Coding Agent, 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 Pi Coding Agent:


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 Pi Coding Agent:


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 Pi Coding Agent:

Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
Compare Claude Code to Foam or Pi Coding Agent: