Atera - Atera’s all-in-one platform enables IT professionals to gain access, visibility, and control over all their networks and devices from anywhere, so they can work smarter and light years faster.
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
NinjaOne - NinjaOne (Formerly NinjaRMM) provides remote monitoring and management software that combines powerful functionality with a fast, modern UI. Easily remediate IT issues, automate common tasks, and support end-users with powerful IT management tools.
Mailwasher - Over 8 million people use MailWasher as their spam filter
Yaazhini - Free Android Application APK & API Vulnerability Scanner tool. Available for Windows & Mac. Get the Android app security scanner.
SpamAssassin - Use this program to "Unspam" your mailbox(es).