fish shell - The friendly interactive shell.
eSmart Tax - eSmart Tax is an easy-to-use, eFile tax preparation and filing service. There's no software to download and the process is straight-forward and secure.
zsh - The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a powerful command interpreter for shell scripting.
TaxSlayer.com - Tax preparation software and proud sponsor of Dale Earnhardt, Jr.
PowerShell Plus - Learn how to learn and master PowerShell fast with an interactive learning center, a powerful IDE, pre-loaded scripts, and a PowerShell Editor… all for free.
TaxBrain - TaxBrain is a taxation filing software that enables users to calculate their taxes easily, and they can file them without any trouble.