Bambooapps ( has released Keep Your Word
1.0 for Mac OS X 10.5 (“Leopard”). It lets you build your own
dictionary, classifying and grouping the terms exactly how you want
to, while helping you to learn the longest list of words thanks to
its different exercise modes.

Keep Your Word is designed to: let you build your own dictionary;
organize and classify your words; find words quickly; and do
exercises. It costs US$24.95.

An unregistered version can be downloaded. It’s fully functional,
although limited to 30 days. Keep Your Word requires Leopard, and
runs on any Mac supported by Leopard.