UNIX is a powerful operating system that is very popular among the computing community.
Vi IMproved (Vim) - free and open-source highly configurable text editor
Secure Copy (SCP) - securely copy files and directories between remote hosts
SFTP (Secure Shell (SSH) File Transfer Protocol) - secure file protocol that is used to access, manage, and transfer files over an encrypted SSH transport
Slurm Workload Manager also known as Simple Linux Utility for Resource Management (SLURM) - free and open-source job scheduler for Linux and Unix-like kernels