Mozilla Facebook Container - Take control of all your Facebook data
Manatee Works - Manatee Works offers barcode decoding solutions.
Facebook Clear History - Delete data that Facebook has collected on you
MapYourTag - Start tracking your assets in no time with your smartphone and QR code, NFC or custom tags. Asset tracking.
Exodify - Reveal creepy trackers spying on you 👀, hidden in apps
QRness - A free QR code generator that outputs a QR code widget for every page of your website so that your users can easily send your content to their mobile device for further reading on-the-go without cumbersome sync-tools/registrations/extensions.