Sarahah - Sarahah is a Social Networking Application for providing anonymous feedback launched in 2016 and available to use on iOS and Android platforms.
wikiHow - wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual.
Lipsi - This app is an often used app as an alternative for Sarahah.
Blurtit - Blurtit is a Q&A website. You can ask a question or answer on any question.
Ask.fm - Curious? Just ask! Openly or anonymously.
AllAnswered - Your Team's Collective Brain All-In-One Knowledge Management System Wiki + Q&A + Workflow + AI