VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Pet Manager
PetDesk
InvertMate
ProPet
Revelation Pets
Free hermit crab care app. Track enclosures, monitor humidity & temperature, log colony growth, and set care reminders. Download CrabPod free.
Which is more popular?
Based on our record, Eloquent JavaScript seems to be more popular. It has been mentioned 218 times since March 2021.
Website, pricing, platforms and company facts side by side.
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EJS
Eloquent JavaScript
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|---|---|---|
| Website | eloquentjavascript.net | invertkeeping.com |
| Pricing | ||
| Platforms | — | |
| Company | — | 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Eloquent JavaScript yet.
The ultimate care companion for hermit crab and isopod keepers! CrabPod helps you track enclosures, monitor environment conditions, log care activities, and never miss important tasks like feeding or misting. ENCLOSURE MANAGEMENT Track multiple enclosures - crabitots, isopod bins, bioactive...
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
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Walkthroughs and reviews on video.
Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Eloquent JavaScript and CrabPod.
CrabPod's answer:
Swift and SwiftUI for iOS, with Core Data for local storage. Native iPhone and iPad app.
CrabPod's answer:
After building InvertMate for tarantula and scorpion keepers, the developer realized hermit crabs and isopods need a completely different approach. They're colony animals, not individual pets. So he built CrabPod with colony-specific features like population tracking, environment health monitoring, and group care reminders.
CrabPod's answer:
CrabPod is the only app designed specifically for hermit crab and isopod keepers. It includes colony population tracking, environment monitoring (temperature and humidity), molt logging, shell change tracking, and care reminders. No other app addresses the unique needs of colony-based invertebrate keeping.
CrabPod's answer:
There are no real competitors. Generic pet apps don't support colony tracking, humidity monitoring, or shell change logs. CrabPod was built from the ground up for how hermit crab and isopod keepers actually care for their animals. It's free with no ads.
CrabPod's answer:
Hermit crab owners and isopod hobbyists, from first-time keepers setting up their crabitat to breeders managing multiple isopod colonies. Many are active on Reddit (r/hermitcrabs, r/isopods) and Facebook groups dedicated to these species.
Share your experience with using Eloquent JavaScript and CrabPod. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

If you haven’t read Eloquent JavaScript , go check it out. It’s one of my all-time favourite programming books — hands down. - Source: dev.to / 12 months ago
Videos, blogs, text-based teachings, YouTube project-based learning, books, and the like are all examples of various methods and mediums of acquiring skills, especially in the software engineering industry. As I continue to navigate... - Source: dev.to / almost 2 years ago
Seconded. I won't recommend it and no one I know has recommended it for a decade. It's hard for someone who doesn't know JS to know which parts has changed and is no longer the way to do things. https://github.com/getify/You-Dont-Know-JS... - Source: Hacker News / about 2 years ago
Tracking CrabPod since Jun 2026.
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Track your tarantula, scorpion, mantis & millipede collection. Log molts, feedings, weight & enclosure conditions. Free care companion app for invertebrate keepers.
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