VirtualBox w/ any Linux distro + Terminator vs z/Scope Terminal Emulator

Allows you to run your virtual machines pre-configured by you or others.

Virtual Box versions for:
-- Windows 7/8/10
-- All Linux installations
-- MAC OS x
-- Solaris 10/11

Virtual OSs include:
-- Oracle Linux 5/6/7.x (RHEL clones)
-- Solaris10/11
-- Occassionally a Windows Beta

Oracle itself provides many free VMs, pre-configured with various software stacks and hands-on lab materials for learning, geared toward. These have helped me earn three of my Oracle certifications:

-- Oracle Database development
-- Oracle DBA
-- MySQL development
-- Java Standard/Enterprise development
-- Big data
-- Webcenter portal & others

Pre-installed software in or more of the various stacks includes:
-- Oracle Database 11/12
-- JDK/Eclipse
-- Enterprise Mgr
-- MySQL
-- WebLogic
-- Cloudera, etc.

Whether you prefer zsh, bash, or fish, Linux will support it.

VirtualBox provides almost total isolation from Windows running underneath it, removing a lot of security issues.

While the OS underneath it is proprietary and does spy on you or actively violate your freedom, so to speak, you can still have a little piece of mind knowing that VirtualBox (your Linux distro and shell of choice) as well as Terminator are all FOSS.

z/Scope supports tabs and tab-based navigation.

Licenses are permanent. Price starts at $46. First year support is free. Continuing subscription, it's not mandatory to renew maintenance services.

It supports IBM TN3270E / TN3270 emulation, IBM TN5250E, UNIX VT100-420, SSH and secure FTP integration.

Windows and Web-based editions.