Microsoft Security Essentials is described as '(MSE) is an antivirus software product that provides real-time protection against different types of malicious software such as viruses, spyware, rootkits and Trojan horses' and is a leading Anti-Virus app in the security & privacy category. There are more than 25 alternatives to Microsoft Security Essentials for a variety of platforms, including Windows, Mac, Android, iPhone and Linux apps. The best Microsoft Security Essentials alternative is ClamAV, which is both free and Open Source. Other great apps like Microsoft Security Essentials are Avast Free Antivirus, Microsoft Defender, Bitdefender Antivirus and Kaspersky AntiVirus.
more features, more customisable