If you're trying to find the best and safest tool to open 7zip files that have password protection. The SysInspire 7z Password Recovery Software is a solution I'd like to suggest. because you can recover and remove any kind of complex password using this software. The software features an easy-to-use interface and supports all 7z file types. Advanced techniques are also used to recover passwords quickly and successfully. 

More Info - Unlock a Password Protected 7zip file