date-fns
Moment.js
Luxon
js-Joda
Next.js
Nuxt.js
CakePHP
2kB JavaScript date utility library

Pattern Monster
Patternizer
SVG Stripe Generator
SVGeez
PatternPad
Plain pattern
Doodad.dev's Pattern Generator
Create patterns online

Which is more popular?
Based on our record, Day.js seems to be more popular. It has been mentioned 43 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | day.js.org | patterninja.com |
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Share your experience with using Day.js and Patterninja. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Date strings. ISO 8601 timestamps like "2026-04-27T10:00:00Z" are string to the converter. If you're parsing them with date-fns or dayjs, you'll want to change those to Date in your final types. - Source: dev.to / 6 months ago
Dayjs - Fast 2kB alternative to Moment.js with the same modern API. - Source: dev.to / 9 months ago
I think the JS Date class should be avoided for anything related to DateTime. Instead, use one of the established libraries: Moment.js or Day.js. And in the near future, use the successor of Date, the new Temporal API. - Source: dev.to / 12 months ago
Tracking Patterninja since Mar 2021.
When comparing Day.js and Patterninja, you can also consider the following products.

date-fns provides the most comprehensive yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.
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Pattern Monster is a pattern maker app to create vector patterns for your projects
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Parse, validate, manipulate, and display dates in JavaScript
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Create awesome background patterns in just a few minutes
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Application and Data, Libraries, and Javascript Utilities & Libraries
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SVG Stripe Generator is an easy-to-use tool that enables you to create unlimited stripes and then download them to the device.
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