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
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
Jodel - What is Jodel all about? Jodel is the community that shows you what's happening in your area in real-time.
Briar - Secure messaging, anywhere
Yakko - Anonymously post, comment, and interact with people at your university.