Dev tools · alternatives · 2026

24 alternatives to Day.js

2KB immutable date time library alternative to Moment

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Day.js launched in 2018; newer entries below may have overtaken it.

1. 1
   Fast 2kB date library alternative to Moment.js with the same API▲122

   ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

   2018 · github.com · its alternatives →

2. 2
   Moment.js▲279

   Parse, validate, manipulate, and display dates in JavaScript

   2015 · momentjs.com · its alternatives →

3. 3
   Day.js 1.6 locale and plugins 2kb moment.js alternative with same API▲6

   ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

   2018 · github.com · its alternatives →

4. 4AD
   A date range picker for Twitter Bootstrap▲363

   2012 · dangrossman.info · its alternatives →

5. 5
   Booking.js by Timekit▲535

   Make a beautiful embeddable booking widget in minutes.

   2015 · timekit.io · its alternatives →

6. 6JL
   JS library to make your website instant▲426

   http://instantclick.io/ It seems the internet architecture won't bring us instant websites anytime soon. So here is a hack. I released this JS library last month (today is version 2.0 release, fixing v1.0's rough edges), it makes use of HTML5's pushState and preloading to make a website instant. It works like this: before clicking on a link, you'll hover over it. And there's a delay of 200-300 ms between these two events. InstantClick uses this delay to preload a page, when you click on a link it will display instantly in most case. (You can test on the website.) That's…

   2014 · its alternatives →

7. 7
   dateDropper Javascript▲156

   The lightest and the most complete javascript date picker

   2021 · felixg.io · its alternatives →

8. 8
   Chart.js▲263

   Simple, clean & engaging charts for designers and developers

   2014 · chartjs.org · its alternatives →

9. 9
   Chart.js 2.0▲440

   Simple, clean & engaging charts for designers & developers.

   2016 · chartjs.org · its alternatives →

10. 10
    Chart.js 4.0▲111

    Open source JavaScript charting library for the modern web

    2022 · github.com · its alternatives →

11. 11
    Pts.js – A library for visualization and creative coding▲611

    Pts is a javascript library for visualization and creative-coding.

    2018 · ptsjs.org · its alternatives →

12. 12TJ
    Tzintl.js – International Date-Time Conversion▲56

    TZIntl.js is a light-weight international date-time conversion library.

    2021 · masswerk.at · its alternatives →

13. 13
    thedaywefightback.js▲472

    Add a banner to your site in opposition to mass surveillance on 02/11 - tfrce/thedaywefightback.js

    2014 · github.com · its alternatives →

14. 14
    Fast.js – faster reimplementations of native JavaScript functions▲323

    Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js

    2014 · github.com · its alternatives →

15. 15
    uPlot.js – An exceptionally fast, tiny time series chart▲260

    📈 A small, fast chart for time series, lines, areas, ohlc & bars - leeoniya/uPlot

    2019 · github.com · its alternatives →

16. 16GJ
    Grid.js – Advanced table library that works everywhere▲390

    Grid.js is a lightweight JavaScript table plugin that works on all web browsers and devices. Grid.js is open-source and it helps you create advanced tables in seconds!

    2020 · gridjs.io · its alternatives →

17. 17
    Summarize your time availability in seconds▲109

    Simple tool to share your availability as plain text. Select time slots, convert timezones, copy and send. No calendar links needed.

    2020 · whattime.today · its alternatives →

18. 18
    Advanced Mathematics Library for Node.js and JavaScript▲123

    Advanced Mathematics Library for Node.js and JavaScript - numbers/numbers.js

    2012 · github.com · its alternatives →

19. 19WJ
    Way.js – Simple, persistent, framework-agnostic two-way databinding▲162

    2014 · gwendall.github.io · its alternatives →

20. 20
    Umbrella JS, a 2.5kb jQuery alternative▲132

    :umbrella: Lightweight javascript library for DOM manipulation and events

    2018 · umbrellajs.com · its alternatives →

21. 21
    Nerv – A fast React alternative, compatible with IE8 and React 16▲133

    A blazing fast React alternative, compatible with IE8 and React 16. - NervJS/nerv

    2018 · github.com · its alternatives →

22. 22
    288 Analog Clocks Give Digital Time▲117

    JS/ReactJS simulation of A Million Times

    2017 · clocks.80limit.com · its alternatives →

23. 23
    Just right and light-weight date time library for JavaScript▲5

    Light-weight, type-safe, immutable and chainable without dependencies. Handles UTC (default) and the local time of the environment, ambiguous daylight saving time strictly.

    2025 · github.com · its alternatives →

24. 24
    Swap.js – a JavaScript micro-framework (HTML fragments over the wire)▲127

    Hi HN! I created this lib in the need of a simple and tiny framework to easily do AJAX-style navigation / replacement of fragments in the page, in a web application. For people who don't want to use client-side-rendering and complex frameworks à la React, there are nowadays a few "HTML-over-the-wire" libraries, like HTMX, Unpoly or this super-tiny one Swap.js :) One other key thing is that no external tool is needed: no bundler, no webpack, no TypeScript compiler, no minification needed. Just write HTML, JS (+ your preferred server-side language: PHP, Python, etc.) and it works. The…

    2023 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →