LockHunter - It is a free tool to delete files blocked by something you do not know.

Cisco Umbrella - Cisco Umbrella is a cloud security platform that provides the first line of defense against threats on the internet.

Wise Force Deleter - Delete Any File That Windows Can’t Delete.

WebTitan - WebTitan is an advanced DNS based web content filter and web security layer that blocks malware, ransomware and phishing attempts as well as providing web content control. Cloud and gateway versions available.

FileASSASSIN - FileASSASSIN is an application that can delete any type of locked files that are on your computer.

DNSFilter - DNSFilter offers DNS-Based Content Filtering & Threat Protection.