
ShrimpTank.app
AquaKeeper.app
The free aquarium logbook that forecasts your water parameters.
Learn JavaScript
JavaScript.com
The State of JavaScript 2018
JavaScript Quiz
JavaScript Operator Lookup
React Nice Dates
Eloquent JavaScript
I've built this Interactive JavaScript Knowledge Map that allows developers to get a glance at _most_ topics in modern JavaScript.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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JSK
JavaScript Knowledge Map
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| Website | reefnotes.com | learnjavascript.online |
| Pricing | — | |
| Company | Startup from Germany · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

reefnotes is a calm aquarium logbook that runs in your browser — nothing to install, works on every device. Log every water test, water change and dose in one place. reefnotes draws the trend, learns your water-change rhythm as the logbook fills, and shows you where a value is heading before the...
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What each product offers, as listed by its team.

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Possible disadvantages
An editorial look at what each product does well and who it suits.

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