Dev tools · alternatives · 2026

24 alternatives to Waitasecond

Elegant JavaScript or TypeScript promises

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Waitasecond launched in 2023; newer entries below may have overtaken it.

1. 1
   Waitlist API▲807

   Quick and easy waitlist with built in referral.

   2020 · getwaitlist.com · its alternatives →

2. 2
   Async UI: A Rust UI Library Where Everything is a Future▲173

   2022 · wishawa.github.io · its alternatives →

3. 3KT
   Kneden – Transpile ES7 Async/await to ES6 Promise Chains (Babel Plugin)▲76

   2016 · github.com · its alternatives →

4. 4JL
   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 →

5. 5AT
   Await-Tree – Visualize Async Rust Task Execution in Real-Time▲28

   2025 · github.com · its alternatives →

6. 6
   TypeScript 6.0▲156

   The last TypeScript release built on JavaScript

   Mar 2026 · typescriptlang.org · its alternatives →

7. 7AA
   Async/await alternative▲17

   2016 · github.com · its alternatives →

8. 8CA
   Cancelable async primitives for JavaScript▲84

   2017 · github.com · its alternatives →

9. 9AA
   Axax – Async iterator extensions for JavaScript▲74

   2018 · github.com · its alternatives →

10. 10PC
    Pure C Asynchronous HTTP Framework▲80

    2022 · github.com · its alternatives →

11. 11TC
    The cost of Rust async/await▲15

    2020 · github.com · its alternatives →

12. 12
    arrival-time▲11

    Simple and powerful progress time estimation (ETA)

    2024 · github.com · its alternatives →

13. 13AU
    A utility to reduce TypeScript errors over time▲12

    2022 · npmjs.com · its alternatives →

14. 14
    LazyPromise = Observable – Signals▲34

    A Promise-like primitive which is lazy/cancelable, has typed errors, and emits synchronously instead of on the microtask queue. In a way LazyPromise is what you get if you take an Observable and make it impossible to misuse it for what the Signals were built to do.

    Dec 2025 · github.com · its alternatives →

15. 15
    Then▲3

    Elegant Async Code in Swift

    2016 · its alternatives →

16. 16CB
    Cross-browser asynchronous JS script loader w/callbacks▲45

    2012 · github.com · its alternatives →

17. 17AT
    Async Transducers with Promises▲5

    2014 · github.com · its alternatives →

18. 18A1
    A 12 line library for writing readable code with `await`▲6

    2019 · github.com · its alternatives →

19. 19
    JS Brain Teasers▲8

    Learn the javascript event loop in a new and fun way

    2025 · jsbrainteasers.com · its alternatives →

20. 20
    ActionHero▲8

    The best Async/Await node.js framework for API development!

    2016 · its alternatives →

21. 21AN
    A Node.js stream library that works with promises▲10

    2018 · npmjs.com · its alternatives →

22. 22
    Waitly▲16

    Create your waitlist in minutes

    2025 · gowaitly.com · its alternatives →

23. 23LR
    Lightweight runtime types for vanilla JavaScript▲19

    2020 · github.com · its alternatives →

24. 24
    FastWaitlist▲19

    Validate your ideas without writing any code

    2024 · fastwaitlist.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 →