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

GitHub Copilot
Tabnine
Cursor
ChatGPT
Safurai
MarsX
TabbyML
Free AI-powered code completion for *everyone*, *everywhere*

Which is more popular?
Codeium might be a bit more popular than Day.js. We know about 46 links to it since March 2021 and only 43 links to Day.js.
Website, pricing, platforms and company facts side by side.
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| Website | day.js.org | codeium.com |
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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.

No analysis of Day.js yet.
Overall verdict
Why this product is good
Recommended for
Codeium is particularly recommended for software developers, coding enthusiasts, and teams looking to boost productivity and reduce the time spent on coding and debugging. It is suitable for beginners who need guidance, as well as experienced developers looking for efficiency enhancements.
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Codeium: Free Copilot Alternative
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Day.js and Codeium. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

We have no reviews of Day.js yet. Be the first one to post
Codeium (Windsurf) is a fast, privacy-focused AI coding assistant that supports autocomplete, refactoring, and in-editor chat across multiple programming languages. Often, it’s used by full-stack developers who need...
Yes, some free alternatives to GitHub Copilot like Codeium offer features that can be suitable for enterprise use. However, for advanced needs, you might consider paid options like TabNine Enterprise or DeepCode (Snyk...
Another notable feature of Codeium is context pinning. It allows developers to pin any scope of code, such as a repository, a file, or a function, so Codeium takes the code in that section more seriously when...
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 / 8 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
Codeium provides free AI code completion and chat for individual developers. It integrates with VS Code, JetBrains, Vim, Emacs, and a growing list of other editors. The completions are competitive with Copilot in quality for most... - Source: dev.to / 6 months ago
Visit the official website at https://codeium.com Download the extension for your preferred code editor. Follow installation instructions to enable AI completions. Begin coding with AI-assisted suggestions immediately. - Source: dev.to / over 1 year ago
Codeium: Supports multiple editors and privacy-conscious teams. - Source: dev.to / over 1 year ago
When comparing Day.js and Codeium, 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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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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Parse, validate, manipulate, and display dates in JavaScript
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TabNine is the all-language autocompleter. We use deep learning to help you write code faster.
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Application and Data, Libraries, and Javascript Utilities & Libraries
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The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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