Vim

I don't know about Emacs, but other than that, Vim is THE only editor you should use (if you ever write any code)!

Vimium

Browse the web in a Vim way. A must-have for Vim addicts(like me).

Bash VI mode

Want use j,k,h, l to navigate in bash? Want Esc then dd? You want the vi mode of bash. Check this article on how to set it. Again, a must-have for vim addicts.

Tmux

If you ever need to login another machine to do some stuff, then you'll need tmux. What? screen? Is it even designed for human?

Dropbox

A must-have you have more then one computing device, by which I mean laptops, desktops, smart phones, tablets, and so on. It just makes file syncing so smooth and so painless.

LaTeX

I love typesetting using LaTeX. For a long time, it's been the reason that I always finish my homework and project reports early.

Python

Life is short (You need Python).

Git

Before Git, the only CMS system I ever used is SVN, which was awful, and it requires you to set up and SVN server to work. Thus I didn't use

Now with Git, everything feels so easy and painless. And I use it to manage virtually all my projects (even this blog!)

Mechanical Keyboard

They make you love typing, and you just can not go back to membrane ones anymore.