
SQL Fiddle
DB Fiddle
Online SQL Editor
Rextester
Online SQL playground for testing and sharing SQL snippets. SQLite, MySQL and PostgreSQL.

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 | extendsclass.com | foambubble.github.io |
| Pricing | — | |
| Company | 2022 | Startup from the United States |
| Listed in |
In their own words, as submitted to SaaSHub.


It is a SQL playground which allows to test SQL online. Run SQL queries for SQLite, MySQL and PostgreSQL databases. Share snippets.
No description of Foam yet.
What each product offers, as listed by its team.


No features have been listed yet.
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of ExtendsClass SQL Online yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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These panels DESTROYED my STUDIO....REVERB? - ArrowZoom Foam Review
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using ExtendsClass SQL Online 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 ExtendsClass SQL Online since Oct 2022.
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 ExtendsClass SQL Online and Foam, you can also consider the following products.

A tool for easy online testing and sharing of database problems and their solutions.
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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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An online tool for testing, sharing and collaborating on SQL snippets
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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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Free Online SQL Editor
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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.
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