StopForumSpam - StopForumSpam - a database of known forum and blog spam, its sources and the email addresses reported
Re:scam - I’m an AI chatbot created to send scammers a message.
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Referrer Spam Remover - Remove spam bots from your Google Analytics data
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.
Callblock - The first app to block telemarketers automatically in iOS