Collins English-Spanish Dictionary

Up to 80,000 indexed English-Spanish / Spanish English translations with thousands of idiomatic expressions, technical terms, and slang. Single Click Activation--Just click on any text in nearly any desktop application and a small pop-up window appears with the translation or definition. Inflected forms--Recognize conjugated verbs, plurals. Extensive language reference contains sample correspondence. You can conjugate verbs in every tense and add other language modules -- even create your own entries.

Requirements:

Mac OS X

Limitations:

10- day trial