Bad PDFs = bad UX. Slow load times, broken annotations, clunky UX frustrates users. Nutrient’s PDF SDKs gives seamless document experiences, fast rendering, annotations, real-time collaboration, 100+ features. Used by 10K+ devs, serving ~half a billion users worldwide. Explore the SDK for free. Learn more →
Top 23 C++ Web Projects
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Project mention: Show HN: ArchGW – An open-source intelligent proxy server for prompts | news.ycombinator.com | 2025-03-04
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CodeRabbit
CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
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webview
Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).
Project mention: webview: Tiny cross-platform webview library for C/C++ | news.ycombinator.com | 2024-05-28 -
Project mention: Mozilla flamed by Firefox fans after reneging on promises to not sell their data | news.ycombinator.com | 2025-03-02
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otter-browser
Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5
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Nutrient
Nutrient - The #1 PDF SDK Library. Bad PDFs = bad UX. Slow load times, broken annotations, clunky UX frustrates users. Nutrient’s PDF SDKs gives seamless document experiences, fast rendering, annotations, real-time collaboration, 100+ features. Used by 10K+ devs, serving ~half a billion users worldwide. Explore the SDK for free.
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WebGui
An example demo of IMGUI (Immediate Mode GUI) on the web. Using only WebGL, GLFW and ImGui. Suitable for being compiled to web assembly (WASM).
ImGUI generally runs on GLFW and there is even a port to html5: https://github.com/jnmaloney/WebGui
ImRAD appears to be based on GLFW as well so one would only have to follow a tutorial: https://uncovergame.com/2015/01/21/porting-a-complete-c-game...
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flutter_everywhere
Template Flutter Project for iOS, Android, Fuschica, MacOS, Windows, Linux, Web, Command Line, Chrome Extension
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esp32-asyncwebserver-fileupload-example
Examples of how to upload files to an ESP32 using Asyncwebserver, SPIFFS and an Upload progress bar.
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flutter_barcode_sdk
Build barcode QR detection apps for Windows, Linux, macOS, Android, iOS and web.
Project mention: Building a Cross-Platform Barcode Scanner for Mobile, Desktop, and Web with Flutter | dev.to | 2025-02-07flutter_barcode_sdk: A Flutter barcode plugin that wraps the Dynamsoft Barcode Reader SDK. This plugin supports Windows, Linux, macOS, iOS, Android, and Web platforms. You'll also need to apply for a trial license to use the SDK.
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OpenQRCode
Open QR Code is an open-source, cross-platform app developed with Flutter, using C, C++, Dart, Skia, Impeller, Java, and Kotlin. It allows users to generate, scan, save, and share QR codes. Available on Android, Windows, and Web, users can easily create and interact with QR codes across platforms.
Open QR Code is an open-source, cross-platform app developed with Flutter, using C, C++, Dart, Skia, Impeller, Java, and Kotlin. It allows users to generate, scan, save, and share QR codes. Available on Android, Windows, and Web, users can easily create and interact with QR codes across platforms.
https://github.com/openlab-x/OpenQRCode
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stream-app-flutter-publisher
With the Dolby.io Flutter streaming SDK you can build for Android, iOS, Web, and Desktop from a single code base.
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imgprmt
CLI tool for storing & sharing your favourite AI image prompts within a tweetable JPG-HTML polyglot image.
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EByte-LoRa-Manager-esp8266-Gateway
A simple LoRa gateway that put all received message in a web socket server, with a complete web-based configuration interface.
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Project mention: A highly performant C++ & Web implementation of Langton's ant | news.ycombinator.com | 2024-04-28
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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).
C++ Web discussion
C++ Web related posts
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Show HN: ArchGW – An open-source intelligent proxy server for prompts
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Mozilla owns information "you input through Firefox"
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Waterfox: Fast and Private Web Browser
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Welcome to Ladybird, a independent web browser
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Waterfox: Fast and Private Web Browser
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Cloud vs Open Source vs Commercial API Gateways: Which One Fits Your Needs?
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New to dev.to and Excited to Share ProxyConf: My Elixir-Powered API Control Plane
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A note from our sponsor - Nutrient
nutrient.io | 14 Mar 2025
Index
What are some of the best open-source Web projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | envoy | 25,634 |
| 2 | webview | 12,928 |
| 3 | Waterfox | 4,223 |
| 4 | userver | 2,558 |
| 5 | otter-browser | 1,865 |
| 6 | TreeFrog Framework | 1,318 |
| 7 | em-dosbox | 1,217 |
| 8 | ArduinoMenu | 978 |
| 9 | rbfx | 874 |
| 10 | WebGui | 741 |
| 11 | flutter_everywhere | 402 |
| 12 | cobalt | 322 |
| 13 | tenfourfox | 280 |
| 14 | webpp | 137 |
| 15 | esp32-asyncwebserver-fileupload-example | 91 |
| 16 | flutter_barcode_sdk | 49 |
| 17 | X4-rest-server | 21 |
| 18 | OpenQRCode | 19 |
| 19 | stream-app-flutter-publisher | 9 |
| 20 | imgprmt | 7 |
| 21 | EByte-LoRa-Manager-esp8266-Gateway | 5 |
| 22 | LangtonsAnt | 4 |
| 23 | webpp | 2 |
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