Top 23 JavaScript HacktoberFest Projects

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1. axios

   1 508 109,350 9.6 JavaScript

   Promise based HTTP client for the browser and node.js

   

   Project mention: How to Bypass Anti-Bot Walls for Production-Ready Apps | dev.to | 2026-07-02

   Lets look at a real-world scenario where all corporate websites play with agentic AI developers by using “soft block” tricks. I will be using Node.js axios library locally to send asynchronous network requests to REST endpoints, in this case our target URL endpoint is Amazon’s DDR5 ram listing page (you can use any website you like for scraping data):

2. AppSignal

   www.appsignal.com sponsored

   Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.

   

3. Material UI

   2 303 99,123 9.9 JavaScript

   Ready-to-use foundational React components, free forever. It includes Material UI, which implements Google's Material Design.

   

   Project mention: Show HN: Typique – a bundler-independent, zero-runtime CSS-in-TS library | news.ycombinator.com | 2026-01-07

   Hi HN! I’ve been following zero-runtime CSS-in-JS/TS libraries for a while and noticed that most of them end up overwhelmed by bundler compatibility issues. A good summary of these problems is in the final status report [1] of Pigment CSS — MUI’s attempt in this space.

   As someone working on TypeScript tooling, I started wondering whether this problem could be approached from a different angle: instead of relying on bundler plugins, use TypeScript types to define styles, and TypeScript tooling to provide locally scoped class and CSS variable names.

   This led to Typique — a library built as a TypeScript plugin. It provides IDE integration (completion, diagnostics, quick fixes) and emits plain CSS without any dependence on bundler or framework. It’s early, but already usable; I’ve been using it in a couple of personal projects.

   Feedback, questions, and skepticism are very welcome. Thanks for reading.

   [1] https://github.com/mui/material-ui/issues/45759#issuecomment...

4. 33-js-concepts

   3 39 66,530 8.7 JavaScript

   📜 33 JavaScript concepts every developer should know.

   

   Project mention: 33-js-concepts VS javascript - a user suggested alternative | libhunt.com/r/33-js-concepts | 2026-01-15

5. Meteor JS

   4 81 44,800 9.9 JavaScript

   Meteor, the JavaScript App Platform

   

   Project mention: Meteor 3.5: accounts-express Brings Meteor Accounts to Express | dev.to | 2026-08-24

   That feedback is already shaping the next practical step. We are working toward configurable login and logout endpoints plus long-lived API tokens, extending the accounts-express use case without losing the connection to Meteor Accounts. It is a concrete example of how real application needs can guide what comes next.

6. ToolJet

   5 197 41,056 10.0 HTML

   Open-source foundation of ToolJet AI - the enterprise app generation platform for internal tools, dashboards, business applications, workflows and AI agents. Build visually, from a prompt, or from Claude Code, Codex and Cursor over MCP 🚀

   

   Project mention: LongLink alternatives - reflex, streamlit, appsmith, ToolJet, and budibase | libhunt.com/r/longlink | 2026-09-08

7. remote-jobs

   6 49 40,878 9.0 JavaScript

   Source for remoteintech.company — a community-maintained directory of remote-friendly tech companies

   

8. awesome-copilot

   7 34 39,849 9.9 JavaScript

   Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.

   

   Project mention: GPT-5.6 launched and developers immediately hit their usage limits. The fix is not a bigger plan | dev.to | 2026-07-10

   5. context-map - 9,357 installs (GitHub) Generate a precise map of relevant files, dependencies and tests up front, so the agent navigates instead of exploring. Exploration is the silent budget killer: every wrong file opened is paid for again in every later turn that carries it.

9. SaaSHub

   www.saashub.com sponsored

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. fastify

    8 129 37,240 9.5 JavaScript

    Fast and low overhead web framework, for Node.js

    

    Project mention: Two AI reviewers, one Fastify PR, and a 404 that quietly became a 414 | dev.to | 2026-10-02

    fastify#6716, "feat: add support of onMaxParamLength", merged in May and first released in v5.9.0. It adds a hook for when a route parameter is longer than maxParamLength (default 100 characters).

11. hackathon-starter

    9 26 35,253 9.4 JavaScript

    A boilerplate for Node.js web applications

    

    Project mention: PR-05 at Hacktoberfest: Optimizing HERE Maps E2E Tests and Handling PR Feedback | dev.to | 2025-10-26

    Pull Request #1457

12. JavaScript

    10 18 34,275 3.5 JavaScript

    Algorithms and Data Structures implemented in JavaScript for beginners, following best practices. (by TheAlgorithms)

    

13. webtorrent

    11 86 31,427 8.8 JavaScript

    ⚡️ Streaming torrent client for the web

    

    Project mention: Ask HN: Streaming a Bittorent Video from a Webpage? | news.ycombinator.com | 2025-11-29

    WebTorrent works on the browser but I'm not sure if this is what you're asking for

    https://webtorrent.io/

14. jsPDF

    12 41 31,310 6.7 JavaScript

    Client-side JavaScript PDF generation for everyone.

    

    Project mention: Saving a tweet as a PDF is harder than it looks (CORS, tokens, and Unicode) | dev.to | 2026-08-05

    This one bit hardest. I drew the whole tweet card with jsPDF, which is great, until you feed it anything outside Latin-1. The built-in fonts (Helvetica and friends) have no glyphs for Devanagari, Arabic, CJK, or emoji. Hindi text came out as boxes and broken characters.

15. swagger-ui

    13 172 29,029 9.3 JavaScript

    Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

    

    Project mention: Publishing OAS-Based API Doc on GitHub Pages | dev.to | 2026-03-15

    Most of the content is the same as what is written here.

16. nginxconfig.io

    14 5 28,258 5.7 JavaScript

    ⚙️ NGINX config generator on steroids 💉

    

17. GDevelop

    15 154 27,275 9.8 JavaScript

    🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.

    

18. shields

    16 144 27,236 9.7 JavaScript

    Concise, consistent, and legible badges in SVG and raster format

    

    Project mention: How to Download a GitHub README as PDF (Badges, Tables and Mermaid Included) | dev.to | 2026-10-06

    Badge images. Lines like  fetch images from shields.io and similar external URLs. Server-side converters often block external requests; browser-based tools load them normally.

19. Nodemon.io

    17 153 26,658 7.7 JavaScript

    Monitor for any changes in your node.js application and automatically restart the server - perfect for development

    

20. select2

    18 32 25,908 8.2 JavaScript

    Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.

    

    Project mention: Server-based interactive autocomplete with Datastar (and Common Lisp) | dev.to | 2026-09-11

    I have used AngularUI's typeahead (it was actually good :) ), I still use select2 (JQuery-based, you need a JS config, a jS post-process if needed, and an API endpoint that returns JSON (that's doable ;) ).

21. Modernizr

    19 6 25,680 6.3 JavaScript

    Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

    

22. Highlight.js

    20 91 25,002 9.2 JavaScript

    JavaScript syntax highlighter with language auto-detection and zero dependencies.

    

    Project mention: Angular’s New injectAsync() API Explained | dev.to | 2026-05-08

    In our demo application, we're using highlight.js and Marked for markdown processing and syntax highlighting.

23. cli

    21 207 24,883 8.7 JavaScript

    Command-line tool to customize Spotify client. Supports Windows, macOS, and Linux. (by spicetify)

    

24. validator.js

    22 34 23,741 7.3 JavaScript

    String validation

    

    Project mention: validatorgo v1.0.0 is here 🎉 — the validator.js you've been missing in Go | dev.to | 2026-05-12

    The library that inspired it: validator.js If you build something with it, I'd genuinely like to hear about it. Drop a comment or tag me on GitHub.

25. whatsapp-web.js

    23 29 22,674 8.1 JavaScript

    A WhatsApp client library for NodeJS that connects through the WhatsApp Web browser app

    

    Project mention: AI bots spam GitHub repo with identical PRs | news.ycombinator.com | 2026-03-11

26. SaaSHub

    www.saashub.com sponsored

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

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  SaaSHub helps you find the best software and product alternatives Learn more →

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