Flizle - Send and receive anonymous messages to friends like with Sarahah, but with the ability to reply.
Roomvine - Chatrooms for real life venues, neighborhoods and events
CuriousCat.me - Curious cat is a Q&A social network that allows you to connect with your followers and know new people.
Spectrum - Browser-based app to visualize the frequencies of an audio file.
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
Berkanan - Chat with people nearby. Even offline, on an ✈️.