Easy text exchange operator for Vim.
cx
On the first use, define the first {motion} to exchange. On the second use, define the second {motion} and perform the exchange.
cxc
Clear any {motion} pending for exchange.
To exchange two words, place your cursor on the first word and type cxiw.
Then move to the second word and type cxiw again. Note: the {motion} used in
the first and second use of cx don't have to be the same.
If you don't have a preferred installation method, I recommend installing pathogen.vim, and then simply copy and paste:
cd ~/.vim/bundle
git clone git://github.com/tommcdo/vim-exchange.git
Once help tags have been generated, you can view the manual with
:help exchange.