[flipcoder]

I set up my keyboard so I can type the additional letters with the right alt key. There are keyboard layout options for Windows, Mac, and Linux as well as mobile keyboards.

For example: Right alt + c = ĉ

For linux its pretty simple, you just have to use: setxkbmap -layout us -variant altgr-intl -option esperanto:qwerty

[lcall]

Or one can just use the simple internet tradition that a letter followed by an x is as if it had the caret on it. For example, instead of ĉ just writing cx.