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fish shell - The friendly interactive shell.
LibraryThing - A home for your books.
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.
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
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.