how2 : stackoverflow from the terminal.
how2 finds the simplest way to do something in a unix shell. It's like man, but you can query it in natural language.
Litmus : Test and track your emails. Email previews, analytics and spam filter testing.
Caire : Caire is a content aware image resize library
Hurl : Hurl is a command line tool that runs HTTP requests defined in a simple plain text format.
It can chain requests, capture values and evaluate queries ...
xh : xh is a friendly and fast tool for sending HTTP requests. It reimplements as much as possible of HTTPie's excellent design, with a focus on improved p...
tmpmail is a command line utility written in POSIX sh that allows you to create a temporary email address and receive emails to the temporary email address. It uses 1secmail's API to receive emails.