Sarahah - Sarahah is a Social Networking Application for providing anonymous feedback launched in 2016 and available to use on iOS and Android platforms.
Ask.fm - Curious? Just ask! Openly or anonymously.
Lipsi - This app is an often used app as an alternative for Sarahah.
Tellonym - Tellonym is the most honest place on the internet.
Flizle - Send and receive anonymous messages to friends like with Sarahah, but with the ability to reply.
Confessout - Anonymous messaging web app.