Hidden Bar - A ultra-light MacOS utility that helps hide menu bar icons.
QuickMark - QuickMark makes everything possible.
Bartender Mac App - Bartender is an award-winning app for macOS that superpowers your menu bar, giving you total control over your menu bar items, what's displayed, and when, with menu bar items only showing when you need them.
ZXing - Barcode Scanner for Android
Vanilla - Vanilla is a free Mac app that lets you hide icons from your menu bar.
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.