A ruby script which makes it easy to add, delete and list the ssh aliases in ~/.ssh/config.
Installation is simple:
$ git clone https://github.com/jamesmoss/ssh-alias.git
$ cd ssh-alias
$ chmod -r +x .
To add a host run ./new-ssh-alias.rb and follow the prompts. The script also takes care of transferring your public key to the server so you won't have to re-enter your password every time you connect.
If you want to remove an alias use ./delete-ssh-alias.rb and follow the prompts. ./list-ssh-aliases.rb will print a list of every alias you've got setup.