Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.

Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.

Stupid Chat - World's newest Anonymous Social Network

Anchor CMS - Free and lightweight blogging system

Sarahah - Sarahah is a Social Networking Application for providing anonymous feedback launched in 2016 and available to use on iOS and Android platforms.

Textpattern - Textpattern is an elegant content management system that is free, open source software.