Dev tools · alternatives · 2026

24 alternatives to Prepack

A tool for making JavaScript code run faster

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prepack launched in 2017; newer entries below may have overtaken it.

1. 1AI
   An Isomorphic JavaScript Framework Faster Than React▲337

   2015 · jsblocks.com · its alternatives →

2. 2FJ
   Fast.js – faster reimplementations of native JavaScript functions▲323

   2014 · github.com · its alternatives →

3. 31J
   1kb JavaScript library for building front end applications▲187

   2017 · github.com · its alternatives →

4. 41K
   1 KB JavaScript library for building front end apps▲242

   2017 · github.com · its alternatives →

5. 5FJ
   Faster.js – a micro-optimizing JavaScript compiler▲89

   2018 · github.com · its alternatives →

6. 61K
   1 KB JavaScript framework for building front-end applications▲216

   2017 · github.com · its alternatives →

7. 7JL
   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 →

8. 8EA
   Expounder – A small JavaScript library for more engaging tutorials▲134

   2016 · skorokithakis.github.io · its alternatives →

9. 9FA
   Fez, a file-based build tool for JavaScript▲70

   2014 · isaacbw.com · its alternatives →

10. 10MM
    Mastering Modular JavaScript▲94

    2018 · github.com · its alternatives →

11. 11AC
    A Chrome extension that tracks front-end JavaScript at runtime▲95

    2018 · github.com · its alternatives →

12. 121K
    1 KB JavaScript library for building applications▲116

    2017 · github.com · its alternatives →

13. 13FA
    Fastn, a JavaScript tool for building user interfaces▲47

    2015 · korynunn.github.io · its alternatives →

14. 14CA
    Codewich – A live-updating TypeScript/CSS/HTML playground▲114

    2017 · codewich.com · its alternatives →

15. 15NA
    nunjucks, a better templating system for javascript (jinja2 inspired)▲38

    2012 · nunjucks.jlongster.com · its alternatives →

16. 16AR
    A Repo of JavaScript Coding Challenges▲127

    2015 · github.com · its alternatives →

17. 17
    NotebookJS▲109

    Scientific computation for JavaScript

    2016 · its alternatives →

18. 18
    Jsblocks▲97

    Faster than AngularJS and ReactJS. Better MV-ish Framework.

    2015 · its alternatives →

19. 19M3
    Moon – 3kb JavaScript UI compiler▲71

    2018 · kbrsh.github.io · its alternatives →

20. 20BA
    BetterSlack – A Chrome extension to make Slack better▲80

    2018 · g3rv4.com · its alternatives →

21. 21TA
    TopLevel – A New Way to JavaScript Your HTML▲79

    2014 · github.com · its alternatives →

22. 22JA
    JSRobot – A platform game you play by coding in JavaScript▲79

    2017 · github.com · its alternatives →

23. 23CB
    Cross-browser asynchronous JS script loader w/callbacks▲45

    2012 · github.com · its alternatives →

24. 24H1
    Hyperapp – 1 KB JavaScript library for building front end apps▲69

    2017 · 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 →