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.

Block Together - A useful tool which helps you block trolls on Twitter.

reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.

Secateur - Use Secateur if you want to temporarily or permanently block or mute (or both block and mute) a Twitter account and all its followers.

UniqPin - UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect...

CleanSpeak - Keep inappropriate content and trolls out of your community