Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
Phonebot - Make phone calls from within a Slack channel
Sayat - Sayat app is all about getting anonymous and honest feedback.
ShareAccount - Share your account without giving out your password
Sarahah - Sarahah is a Social Networking Application for providing anonymous feedback launched in 2016 and available to use on iOS and Android platforms.
Wing-project.org - WING - Wireless Mesh Network for Next-Generation Internet