Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
HackerOne - HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.
Mailwasher - Over 8 million people use MailWasher as their spam filter
Intruder - Intruder is a security monitoring platform for internet-facing systems.
SpamAssassin - Use this program to "Unspam" your mailbox(es).
Forcepoint Web Security Suite - Internet Security