Some applications that i have installed, with the respective package to install

For install from terminal (CLI): use the command

$ sudo apt-get install packet_name

LETTER

but is also possible install the programs via the Ubuntu Software Center by clicking the icon on the launcher

Ubuntu Software Center icon

1. Click the Dash Home icon (or tap Super), type 'Startup Applications' to search for the application and run it.
2. Click the “Add” button.
3. Name a program.
4. Click the “Browse” button and navigate to “Computer” > usr > bin, where programs are usually installed.
5. Select a program, click the “Open” button followed by the “Add” button.

source: http://www.techsupportalert.com/content/tips-and-tricks-ubuntu-after-installation-ubuntu-1404.htm

To enable X forwarding as default when connected via SSH on other host, in the file

/etc/ssh/ssh_config

made this modifications

ForwardAgent yes
ForwardX11 yes
ForwardX11Trusted yes

Emacs display squares instead of characters when remoted connected (Emacs launched via X). Create the file file ~/.Xdefaults containing

emacs*font: 7x14

and execute

xrdb -merge ~/.Xdefaults

this is at once setup, for make it permanent, create a file called i.e. emacs-setup.sh with this content:

xrdb -merge ~/.Xdefaults

and save it in the directory

/etc/profile.d

Source for some info: http://ubuntuforums.org/showthread.php?t=1896584