reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
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.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
scr.im - Don't share your email on public sites.
Superdense - No text, just icons.