Dev tools · alternatives · 2026

24 alternatives to Fetch polyfill in 500 bytes

🐕 Bare minimum 500b fetch polyfill. Contribute to developit/unfetch development by creating an account on GitHub.

Fetch polyfill in 500 bytes is a lightweight JavaScript tool that provides fetch functionality for browsers that lack native support. It's designed for developers who need to make HTTP requests in older environments… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Fetch polyfill in 500 bytes launched in 2017; newer entries below may have overtaken it.

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

   1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

   2017 · github.com · its alternatives →

2. 2
   1 KB JavaScript library for building front end apps▲242

   1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

   2017 · github.com · its alternatives →

3. 3
   Fetchbook – Run and test your HTTP requests 100% locally▲59

   Run and test your HTTP requests. Git friendly, 100% local. - 4lejandrito/fetchbook

   2023 · github.com · its alternatives →

4. 4
   I've been making JavaScript sandbox alone for 6 years▲397

   Hi HN! Thanks for your attention to my post. It was a big challenge to run most of Node.js packages in browser, fast moreover. Virtual File system, resolve import/export. I got cold many times, depressions, burned out, yet still alive and finished it. Many guys helped me with an advice. Many users give a lot of positive feedback. There are 200,000 monthly unique users. I work full time now because of the freemium business model. To be honest - I am happy after many years of hard work.

   2022 · playcode.io · its alternatives →

5. 5
   1 KB JavaScript framework for building front-end applications▲216

   1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

   2017 · github.com · its alternatives →

6. 6
   1 KB JavaScript library for building applications▲116

   1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

   2017 · github.com · its alternatives →

7. 7
   JavaScript PubSub in 163 Bytes▲104

   pubsub in <100 bytes. Contribute to hassanshaikley/pico-pubsub development by creating an account on GitHub.

   2025 · github.com · its alternatives →

8. 8
   FetchSandboxfree tier, from $5/mo▲348

   API integration testing that remembers what breaks

   Jul 2026 · fetchsandbox.com · its alternatives →

9. 9
   SmolDocling▲158

   256M VLM for end-to-end document AI

   2025 · huggingface.co · its alternatives →

10. 10JL
    JS library to make your website instant▲426

    http:&#x2F;&#x2F;instantclick.io&#x2F; 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 →

11. 11
    JXL.js – JPEG XL Decoder in JavaScript Using WebAssembly in Web Worker▲112

    JPEG XL decoder in JavaScript using WebAssembly (WASM) - niutech/jxl.js

    2022 · github.com · its alternatives →

12. 12
    HyperApp – 1k JavaScript framework for building web applications▲303

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2018 · github.com · its alternatives →

13. 13
    Nub – A Bun-like all-in-one toolkit for Node.js▲277

    Colin here, creator of Nub. I’ve had the general shape of this in mind for years. Nub runs your code with stock `node`, augmented with a `--require` preload hook[0] that adds a transpiler (oxc-powered, packaged as a Node-API add-on), registers a module resolution hook[1], and injects polyfills as needed for APIs like `Worker`, `Temporal`, etc. All purely additive, your code ultimately runs using Node’s actual engine & stdlib implementations. [0] https:&#x2F;&#x2F;nodejs.org&#x2F;api&#x2F;cli.html#-require-module [1]…

    Jun 2026 · github.com · its alternatives →

14. 14
    Polyfill for random_bytes() and random_int() in PHP 5 projects▲7

    PHP 5.x support for random_bytes() and random_int() - paragonie/random_compat

    2015 · github.com · its alternatives →

15. 15CC
    Chunk – Code sandbox for back-end devs▲96

    Chunk co-founder here. We spent the last 2 weeks building this to scratch our own itch: As developers, we often have problems that could be solved just by running a few lines of code. Sometimes, running this code on your local machine is fine. But other time, the code need to run automatically reacting to external events or to run continuously, which means, it needs to run on a server somewhere. So now, you have to find a cloud provider, to package or build the code and finally to deploy it. All of that for what could be literally be 4 lines of code. We couldn’t find an easier way to do…

    2022 · chunk.run · its alternatives →

16. 16
    Million.js▲153

    A fast, <1kb virtual DOM

    2021 · github.com · its alternatives →

17. 17
    Remult – a CRUD framework for full-stack TypeScript▲130

    Full-stack CRUD, simplified, with SSOT TypeScript entities - remult/remult

    2022 · github.com · its alternatives →

18. 18PB
    Polybit – Build, Deploy, Host Node.js APIs▲151

    2016 · polybit.com · its alternatives →

19. 19PJ
    Pure JavaScript P2P file sharing in the browser▲59

    2013 · whatareyoudownloading.com · its alternatives →

20. 20
    Hyperapp – 1 KB JavaScript library for building front end apps▲69

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2017 · github.com · its alternatives →

21. 21
    One click image optimization for GitHub▲34

    Compress more. Ship faster. Waste nothing.

    2014 · shrinkray.io · its alternatives →

22. 22
    Apify SDK – A scalable web crawling and scraping library for JavaScript▲78

    Crawlee—A web scraping and browser automation library for Node.js to build reliable crawlers. In JavaScript and TypeScript. Extract data for AI, LLMs, RAG, or GPTs. Download HTML, PDF, JPG, PNG, and other files from websites. Works with Puppeteer, Playwright, Cheerio, JSDOM, and raw HTTP. Both headf

    2018 · github.com · its alternatives →

23. 23
    ChunkHound, a local-first tool for understanding large codebases▲114

    ChunkHound’s goal is simple: local-first codebase intelligence that helps you pull deep, core-dev-level insights on demand, generate always-up-to-date docs, and scale from small repos to enterprise monorepos — while staying free + open source and provider-agnostic (VoyageAI &#x2F; OpenAI &#x2F; Qwen3, Anthropic &#x2F; OpenAI &#x2F; Gemini &#x2F; Grok, and more). I’d love your feedback — and if you have, thank you for being part of the journey!

    Jan 2026 · github.com · its alternatives →

24. 24
    1kb virtual DOM - it's fast!▲14

    Optimizing compiler for React. Contribute to aidenybai/million development by creating an account on GitHub.

    2021 · 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 →