Awesome
<img src="https://raw.githubusercontent.com/elcalc/elcalc/master/logo.png" alt="elcalc logo" align="right" width="200">elcalc 
Elcalc is a simple, cross-platform calculator, built with Electron. It is fast, intuitive and can be used as an alternative for the default system calculator. It supports basic arithmetic operations.
Install
Check out the latest release.
Dev
I recommend using yarn instead of npm.
<img src="https://imgur.com/giOoc78.png" alt="Screenshot" align="right" width="350"></a>
# Install dependencies
$ yarn install
# Run the app
$ yarn start
# Run lint & tests
$ yarn test
# Build
$ yarn dist
License
MIT