responsively-app – A modified browser built using Electron that helps in responsive web development.

Website: responsively.app
A modified browser built using Electron that helps in responsive web development.

Features
Mirrored User-interactions across all devices. Customizable preview layout to suit all your needs. One handy elements inspector for all devices in preview. 30+ built-in device profiles with option to add custom devices. One-click screenshot all your devices. Hot reloading supported for developers. Please visit the website to know more about the application – responsively.app
github.com/manojVivek/responsively-app/blob/master/README.md

BEM Css class Naming Cheat Sheet by 9elements

When it comes to finding the right class name, it can quickly drive you to despair. Even the most experienced CSS developers don’t always find the right class name right away. This tool aims to help you to not get lost in the BEM cosmos by giving you naming-suggestions for some of the most common web components.
9elements.com/bem-cheat-sheet/