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Top 23 JavaScript Webapp Projects
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Uptime Kuma is a self-hosted monitoring app whose documented monitor types include HTTP, keyword matching, and JSON queries. The pinned release uses the MIT license. You can inspect both the project README and license on GitHub.
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Kargo
Stop Scripting Promotions. Start Shipping with Kargo. Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now.
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express-locallibrary-tutorial
Local Library website written in NodeJS/Express; example for the MDN server-side development NodeJS module: https://developer.mozilla.org/en-US/docs/Learn/Server-side/Express_Nodejs.
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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FileRise
🗂️ FileRise – lightweight, self-hosted file manager & storage hub with granular ACLs, resumable uploads, encrypted folders, WebDAV & SSO. Fully Docker / Unraid compatible.
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coreui
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript without any additional libraries like jQuery
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EnBizCard
EnBizCard helps you create interactive and responsive HTML-based digital business cards that can be hosted with your website.
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everything-chatgpt
🔍 Explore what happens under the hood with the ChatGPT web app, its backend API calls and more. And some speculation, of course.
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react-windows-ui
Build Windows native look & feel apps using ReactJS. Provides a set of accessible, reusable and composable react components that make it super easy to create websites and apps.
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My First Attempt The first repo that I've worked on is a Notepad web app by Amit Merchant. It's an offline capable Notepad Progressive Web App, which could also be accessed via this link, written in mostly JavaScript. I found that the repo was properly maintained, so I tried out the app via the link. While I was exploring different functions of the app, I found the title case conversion function in the Case Converter, which is something that I need, even when writing this blog! I then started testing the function, and looked into the files to understand the structure and the codes, and suggested some improvement on the codes in this issue and made a pull request.
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Cryptofolio
Track your cryptocurrency holdings/portfolio with an open-source web, mobile, and desktop application, along with a self-hosted RESTful API.
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gnome-shell-extension-cast-to-tv
Cast files to Chromecast, web browser or media player app over local network.
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tarkov-dev
The official site for tarkov.dev - A web app to track item prices, view trader barters, quests, maps, and much more!
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mirotalkbro
📡 Open-source, self-hosted WebRTC live broadcasting platform for real-time video, audio, and screen streaming. Build your own broadcasting solution for webinars, events, presentations, announcements, and live online communication without relying on a hosted video platform.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript Webapp discussion
JavaScript Webapp related posts
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Hacktoberfest 2025
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Rogule – a dungeon a day keeps the Balrog away
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Rogule: A dungeon a day keeps the Balrog away
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Using static websites for tiny archives
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Ask HN: What daily puzzles do you play?
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Gerbil Scheme – A Lisp for the 21st Century
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IPissed: Apple is after web capabilities to protect close to 100B App Store Tax
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A note from our sponsor - Kargo
akuity.io | 15 Sep 2026
Index
What are some of the best open-source Webapp projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | uptime-kuma | 91,234 |
| 2 | next-pwa | 4,087 |
| 3 | curso-javascript-ninja | 2,366 |
| 4 | Traduora | 2,125 |
| 5 | express-locallibrary-tutorial | 1,275 |
| 6 | pixel-editor | 1,100 |
| 7 | OpenSupports | 1,037 |
| 8 | FileRise | 1,012 |
| 9 | coreui | 881 |
| 10 | Image-to-Braille | 780 |
| 11 | EnBizCard | 705 |
| 12 | nusmods | 686 |
| 13 | SaltGUI | 629 |
| 14 | everything-chatgpt | 595 |
| 15 | react-windows-ui | 592 |
| 16 | llavavision | 496 |
| 17 | LD-ToyPad-Emulator | 382 |
| 18 | ePubViewer | 381 |
| 19 | notepad | 379 |
| 20 | Cryptofolio | 364 |
| 21 | gnome-shell-extension-cast-to-tv | 300 |
| 22 | tarkov-dev | 237 |
| 23 | mirotalkbro | 207 |
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