The features are designed to mimic the feel of using Messenger on your smartphone, including dark mode, group video calling and notifications, but optimised for the bigger screen on your computer. It's available in 49 languages at launch. 23 Facebook Messenger tips and tricks you've likely never tried.Best free video calling apps 2020: Keep in touch with friends or colleagues.(Pocket-lint) - Facebook has officially announced that its new native desktop Messenger app for Mac and Windows is available globally, and anyone can now download and install it.įacebook told us that it has built the new app from the ground up to make it look and feel like a proper native app, rather than just a web-browser based app, with all the features you'd expect from a proper app.