Input methods

Taiwanese Pack 2.1
A simple input method editor for the PC, which also includes macro scripts for Microsoft Office to enable POJ functionality in Word.

Open Vanilla (External link)
An input method for Mac OS X/Windows which enables various ways to type Chinese characters, plus an option for POJ.

Taiwan's Ministry of Education IME (External link)
Inputs for Tai-lo, the romanization that the Taiwanese government supports. Versions for Windows, Mac OS X and Linux. The page is in Mandarin characters, but can be puzzled out quite easily if you don't read Mandarin. This IME will automatically convert POJ, TLPA and Tong-iong to Tai-lo as you type.