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. 3
   Async/await alternative▲17

   an extendable library that can wait for stuff to happen in a synchronous-but-not-blocking manner - uri-chandler/wait-for-stuff

   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. 5
   Cancelable async primitives for JavaScript▲84

   Composable async primitives with cancelation, control over scheduling, and coroutines. Superior replacement for JS Promises. - mitranim/posterus

   2017 · github.com · its alternatives →

6. 6
   Kneden – Transpile ES7 Async/await to ES6 Promise Chains (Babel Plugin)▲76

   Transpile ES2017 async/await to vanilla ES6 Promise chains: a Babel plugin - babel/kneden

   2016 · github.com · its alternatives →

7. 7
   Await-Tree – Visualize Async Rust Task Execution in Real-Time▲28

   Generate accurate and informative tree dumps of asynchronous tasks. - risingwavelabs/await-tree

   2025 · github.com · its alternatives →

8. 8
   Wait.chat▲84

   Deadline-aware message inbox for async teams

   2020 · expireddomains.com · its alternatives →

9. 9
   And then...▲14

   A minimal CommonJS promises library with useful things like parallel execution, fulfilments and exception handling, while retaining the beautiful simplicity of .then(). - askabt/andthen

   2013 · github.com · its alternatives →

10. 10
    A 12 line library for writing readable code with `await`▲6

    A javascript library for making await more functional - craigmichaelmartin/fawait

    2019 · github.com · its alternatives →

11. 11
    TaskBotJS – TypeScript and JavaScript background job processing▲137

    My favorite JS/TS job processing framework. Maybe yours too? [ARCHIVED] - eropple/taskbotjs

    2018 · github.com · its alternatives →

12. 12
    Cross-browser asynchronous JS script loader w/callbacks▲45

    2012 · github.com · its alternatives →

13. 13AN
    A Node.js stream library that works with promises▲10

    2018 · npmjs.com · its alternatives →

14. 14SA
    SetTimeout as a Service for simulating delays▲16

    2014 · settimeout.io · its alternatives →

15. 15
    Connective – Large-scale reactive programming in Javascript/Typescript▲59

    Als E-Commerce und Internetagentur entwickeln wir innovative Webseiten und Online-Shops Lösungen auf OXID und Shopware. Persönliche Beratung ☎️0711-656 83710

    2019 · connective.dev · its alternatives →

16. 16
    Pure C Asynchronous HTTP Framework▲80

    Asynchronous C networking library with HTTP server, WebSockets, reverse proxy, HTTP/2 gRPC client, TLS and event loop. - Softmotions/iwnet

    2022 · github.com · its alternatives →

17. 17JA
    JSONScript – Asynchronous scripting language using JSON format▲49

    2016 · json-script.com · its alternatives →

18. 18PV
    Promise Visualization Playground▲61

    2015 · bevacqua.github.io · its alternatives →

19. 19
    arrival-time▲11

    Simple and powerful progress time estimation (ETA)

    2024 · github.com · its alternatives →

20. 20
    Nsynjs – JS engine with stoppable threads and without callback hell▲51

    JavaScript engine + state machine with threads and without callbacks - amaksr/nsynjs

    2017 · github.com · its alternatives →

21. 21
    Waitabit▲66

    Privacy focused waitlist and referral program API

    2021 · its alternatives →

22. 22AU
    A utility to reduce TypeScript errors over time▲12

    2022 · npmjs.com · its alternatives →

23. 23
    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 →

24. 24
    Then▲3

    Elegant Async Code in Swift

    2016 · 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 →