Path is an app-based platform that doesn’t work with desktop browsers, so if you’re looking for something that works with both, then this won’t be right for you. This app is designed for working with smaller, more interpersonal groups rather than hundreds and hundreds of friends. Users share updates, photos, media they’re using, books, movies, and shopping purchases.
If you're friends with hundreds or thousands of people on Facebook, it understandably might not be worthwhile to put them all in your Gcal. In this case, it might be easiest just to take 20 minutes or so to add your close friends and family member's special days to your calendar. And really, did the annual onslaught of best wishes on Facebook add much to your life in the first place?
A simple chat (slack style) it's enough. Just having the possibility to send messages either single user or team (#channel). But please don't forgive to give an useful appeal to mobile app (worst error of competitors is, have a good app but totally no mobile friendly!) i would expect to have a similar whatsapp or slack app for messaging within the slack mobile app!