Messenger for Mac - Facebook Messenger wrapped up as a desktop app
Save From Web - Instagram story, photo, and video downloader - Free, online, and one-click download.
Chat for Mac - Facebook Messenger & Chat on your Mac
InstaDp.info - With InstaDp you can view instagram profile picture for free in full(original) size and download it right away.
Chatty - Chat with strangers all around the world in Messenger
Instander - Instander is a free modification of the Instagram app for android. It contains many improvements over the original application. Instander has a lot of different improvements that give the user an edge over other Instagram users.