Dev tools · alternatives · 2026
24 alternatives to Coseq – high order functions for JavaScript async/sync iterators
high order functions for JavaScript async/sync iterators - GitHub - MiguelCastillo/coseq: high order functions for JavaScript async/sync iterators
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Coseq – high order functions for JavaScript async/sync iterators launched in 2017; newer entries below may have overtaken it.
- 1

Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js
2014 · github.com · its alternatives →
- 2

Hi HN, Today we’re launching PowerSync, a Postgres<>SQLite bi-directional sync engine that enables an offline-first app architecture. It currently supports Flutter, React Native and web (JavaScript) using Wasm SQLite in the browser, with more client SDKs on the way. Conrad and I (Ralf) have been working on our sync engine since 2009, originally as part of a full-stack app platform. That version of the system is still used in production worldwide and we’ve learnt a lot from its use cases and scaling. About a year ago we started on spinning off PowerSync as a standalone product that is…
2023 · powersync.com · its alternatives →
- 3

Hey HN! Roughly 4 years ago I started building a lazy functional iteration library for JS/TS. I had a few goals for the library: - Supporting sync, sequential async, and concurrent async iteration - Limiting it to a small number of orthogonal concepts that compose beautifully to solve problems - Making it fully tree-shakeable I built it for myself and have (mostly) been its only user as I refined it. I've used it in lots of personal projects and really enjoyed it. I recently decided it would be nice to spread that enjoyment so I created a documentation website complete with a playground…
2024 · lfi.dev · its alternatives →
- 4

Composable async primitives with cancelation, control over scheduling, and coroutines. Superior replacement for JS Promises. - mitranim/posterus
2017 · github.com · its alternatives →
- 5

Actor runtime and distributed systems framework for Rust - LeonHartley/Coerce-rs
2019 · github.com · its alternatives →
- 6

Transpile ES2017 async/await to vanilla ES6 Promise chains: a Babel plugin - babel/kneden
2016 · github.com · its alternatives →
- 7

Hi all, I've made a javascript library to simplify searching/sorting/filtering in arrays of objects. Its inspired by both GraphQL and SQL, but implemented using javascript Proxies. Instead of creating a new language, its all just javascript. I've made it as part of an experimental database, which uses javascript as the query engine. The normal javascript map/reduce/sort functions are quite difficult to master for junior developers. JAQT is easier to explain, and can still be used in combination with any existing array functions. Please let me know what you think of the…
2024 · github.com · its alternatives →
- 8WJ
2014 · fitzgen.github.io · its alternatives →
- 9

hey HN, I've just released the latest version of my scripting language for the web, hyperscript. It is a love letter to hypercard/hypertalk that I've been working on on and off for the last five years. This release has some major new features, mainly by other people: reactivity by Christian Tanul, a reworked templating system by my student Ben Logan, the morphing algorithm from htmx by Michael West. I added a component mechanism that basically just glues those three things together as well. This language is a labor of love and I don't expect many people to like it or use it, but I hope…
2021 · hyperscript.org · its alternatives →
- 10

Single header stackful cross-platform coroutine library in pure C. - edubart/minicoro
2021 · github.com · its alternatives →
- 11

Simple, reliable, and efficient distributed task queue in Go - hibiken/asynq
2020 · github.com · its alternatives →
- 12

[Satire]🔥 JS utility library to bring classic callback style programming to synchronous code — ES6? More like ES Sucks. - scf4/callbaxx
2018 · github.com · its alternatives →
- 13

2012 · github.com · its alternatives →
- 14

An asynchronous messaging library, written in JavaScript, for node and the web browser - KrisSiegel/msngr.js
2015 · github.com · its alternatives →
- 15

A minimal high performance date library for Node.js and Browser - Teamweek/instadate
2016 · github.com · its alternatives →
- 16

The cost of Rust async/await. Contribute to jkarneges/rust-async-bench development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 17
And then...▲14A 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 →
- 18

Concise guide focuses on asynchronous features of JS
2017 · amazon.com · its alternatives →
- 19

parallel async JS micro library in 25LOC. GitHub Gist: instantly share code, notes, and snippets.
2014 · gist.github.com · its alternatives →
- 20
Learn the javascript event loop in a new and fun way
2025 · jsbrainteasers.com · its alternatives →
- 21

hi hn, today I'm open sourcing a new SQL-like query language that's built for the web. it has dedicated syntax for request, parsers, selectors, and javascript snippets... it was built on nodejs with the incredible moo lexer and nearley parser. if you're a fan of regular expressions, do I have some code to show you! the website is mostly just a few examples and a playground where you can write & run (& share!) your own queries. there's also an introductory blog post where i try but ultimately fail to justify why this should be its own language and not a library/framework. enjoy!
2024 · getlang.dev · its alternatives →
- 22

A Distributed Computing library written for Node.js based on Chapel. - briangu/parallac.js
2016 · github.com · its alternatives →
- 23

Hey HN! I think _hyperscript is an insanely cool language, and while designed for simple front-end DOM interactions, I thought it would be a cool back-end scripting language as well. So, I slapped together a TODO app with a _hyperscript bootstrapping script based on the original repository's node-hyperscript example. My repo isn't clean, just something I worked out over a weekend to prove the concept, also an excuse to play with htmx. :) Please read the README, and let me know how, if anyone's interested, I can work in some of my tweaks to the original repository. I'm kind of a noob with…
2022 · github.com · its alternatives →
- 24

A purely functional red-black tree data structure. Contribute to mikolalysenko/functional-red-black-tree development by creating an account on GitHub.
2014 · github.com · its alternatives →
Also compare
- Fast.js – faster reimplementations of native JavaScript functions alternatives
- Bi-directional sync between Postgres and SQLite alternatives
- Lfi – a lazy functional sync, async, and concurrent iteration library alternatives
- Cancelable async primitives for JavaScript alternatives
- Coerce – Actor runtime for Rust using async/await and tokio channels alternatives
- Kneden – Transpile ES7 Async/await to ES6 Promise Chains (Babel Plugin) 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 →