OpenSSL - OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and …

GMER - GMER is an application that detects and removes rootkits .

Let's Encrypt - Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).

McAfee Stinger - McAfee Stinger is a single purpose program designed to detect and remove the specific virus from the system.

Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.

TDSSKiller - Kaspersky Lab has developed the TDSSKiller utility that allows removing rootkits.