StopForumSpam - StopForumSpam - a database of known forum and blog spam, its sources and the email addresses reported
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
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.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.