File Hash Checker is a free, easy-to-use, portable file signature verifier by Mount White Technology Solutions. You can use it to verify the popular MD5, SHA1, and SHA256 file signatures....
Process Hacker is an advanced, free, open source task manager for Windows®. It can help Windows® users to analyze, manage threads, processes, memory, handles and almost anything that runs on Windows®....
System Explorer is a free, advanced task manager and process analyzer for Microsoft Windows. It is an excellent alternative to Windows "Task Manager" feature that comes with included in all Microsoft Windows OS versions....