DEV Community: Vinzh

[Open Source] BrowserSync — Realtime Multi-Browser Synchronization Engine (C# & Python)

Vinzh — Mon, 24 Aug 2026 09:34:01 +0000

I just open-sourced a project I’ve been working on called BrowserSync, and I’d love to share it with anyone interested in automation, testing, or browser internals.

The motivation came from a recurring workflow bottleneck: whenever testing responsive layouts or running multi-instance workflows, manually repeating the exact same clicks, scrolls, and form inputs across multiple screen sizes is tedious. I wanted a lightweight tool where interacting with one Master browser instantly mirrors every single user action across multiple Slave browsers in real time with near-zero latency.

What BrowserSync solves:

Responsive & Cross-Screen Testing: Open multiple viewports simultaneously (Desktop, Tablet, Mobile). Any mouse move, click, scroll, or input on the Master window propagates across all Slaves in real time, making layout breakages immediately visible.
Multi-Instance Automation: Control multiple Chromium sessions concurrently without installing browser extensions or relying on heavyweight proxy tools.
Interactive Live Demos: Present and interact on one screen while auxiliary displays reflect every gesture accurately and smoothly.
Technical Highlights:

Dual-Stack Implementation: Fully implemented in both C# (.NET 9) and Python 3 (Asyncio & WebSockets), each backed by automated test suites.
Direct Chromium communication over Chrome DevTools Protocol (CDP) with zero extension overhead.
High-fidelity synchronization for real-time Canvas drawing, mouse dragging, form controls, and multi-tab switching.
Full support for complex IME text input, carets, and text selections.
Resilient recovery mechanism (Event Journal Replay) that prevents stream dropouts during network hiccups.
The complete codebase, documentation, and benchmark test page are available on GitHub: 👉 https://github.com/vinzh05/BrowserSync

You can clone the repo and run Start-BrowserSync-CSharp.bat (or Start-BrowserSync-Python.bat) to test it out locally with a single click. Feedback, PRs, and Issues are warmly welcome — especially from developers and QA / Automation Test engineers. If you find the project useful, a Star on GitHub would be greatly appreciated!

Thanks everyone!

This is a post to help your Selenium automation code become faster and more effective!

Vinzh — Sat, 20 Apr 2024 15:22:16 +0000

🚀 Hello programming community! Today, I am pleased to introduce and share my new NuGet package designed to support Selenium in C#. 🎯

🔧 This package makes writing automated test scripts faster and easier than ever! From quick setups to visually writing test cases, everything is simplified to save time and enhance your work performance.

✨ Experience the difference and share your feedback so the package can be improved in the future. Discover how it can help optimize your development process and ensure the quality of your software products.

🔗 Download link and usage documentation are attached below. Try it now and don't forget to follow my page for the latest updates!

GitHub link: https://github.com/vinzh05/SeleniumHelper
NuGet link: https://www.nuget.org/packages/Selenium.SeleniumHelper
In Visual Studio, you can search using the keyword: SeleniumHelper

If you find it useful, please leave a ⭐️star, 🍴fork if you want to contribute, and 👀follow to not miss updates on the nuget and support me!

Nuget support will make Selenium coding simpler!

Vinzh — Fri, 19 Apr 2024 03:46:35 +0000

🚀 Hello programming community! Today, I am pleased to introduce and share my new NuGet package designed to support Selenium in C#. 🎯

🔗 Download link and usage documentation are attached below. Try it now and don't forget to follow my page for the latest updates!

GitHub link: https://github.com/vinzh05/SeleniumHelper
NuGet link: https://www.nuget.org/packages/Selenium.SeleniumHelper
In Visual Studio, you can search using the keyword: SeleniumHelper

If you find it useful, please leave a ⭐️star, 🍴fork if you want to contribute, and 👀follow to not miss updates on the nuget and support me!