DaiwanWay Taiwanese Dictionary
Searchable by English word, romanized Taiwanese, and Taiwanese or Mandarin word (Big5).
English-Taiwanese Dictionary of Common Words
Incomplete word lists.
mWEBgais
A limited database of Taiwanese words searchable via Romanized, Big5, Japanese, or English input.
Travlang's Ho-lo-oe for Travelers
Short, travel-oriented phrase lists in English with sound files.