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

Netumo - Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.

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

AppZero - AppZero is a monitoring and migration tool that allows users to keep track of different applications and servers in both simple and complex IT environments.

EMCO UnLock IT - Unlock file or folder, locked by the system or by an application

RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems