Free to use tool with more than 3,300 downloads. Open-source, cross-platform, desktop app.
Allows a user to instantly test a website for responsiveness across various devices.
Works on Windows, macOS, and Linux.
✅ Free
✅ 3,000 customers
✅ The app is not monetized yet
✅ Built with Electron.js, JavaScript, HTML, CSS
Contact founder here: https://www.microns.io/startup-listings/website-responsive-testing-tool
The founder would be happy to answer all your questions.