Penetration testers,Bounty Hunters love Kali as well as Parrot linux.Both are based upon Debian architecture.I prefer Parrot over Kali linux.Why am i doing so? let's take a look comparison between Kali and Parrot linux. Hardware Requirement Below is the minimum hardware requirement to run both the operating system. Kali Parrot RAM 1GB 512MB Processor Dual/Quad Core Dual Core Disk Space 20GB 15GB Kali requires more recommended hardware specs as compare to parrot.So, if you have dual processor or ram less than 4gb you can go for parrot linux. Tools Both have so many tools for penetration testing,forensics and auditing.But Parrot comes with additional pre-installed tools like anonsurf,office suite.That's why Parrot can also be used for daily basis office work. GUI Here comes important point. Parrot is more user friendly as compare to the Kali linux. Moreover, Parrot