Roomvine - Chatrooms for real life venues, neighborhoods and events
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Treadie - Create your own micro-social network for topics
hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
CryptoInfluence.io - First crypto influencer community
scr.im - Don't share your email on public sites.