Lipsi - This app is an often used app as an alternative for Sarahah.
Ask.fm - Curious? Just ask! Openly or anonymously.
Flizle - Send and receive anonymous messages to friends like with Sarahah, but with the ability to reply.
Anossage - Chat anonymously and have fun with your friends, colleagues, and your crush, or with strangers.
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
Confessout - Anonymous messaging web app.