Sdictionary is the multifunctional dictionary viewer with Unicode (UTF-8) support and open and documented format of the databases.
All databases are free!

News version 2.4:
* Ability to work fine with unsorted dictionaries.
* Word is kept now between databases, it makes it easy to search throughout several dictionaries.
* A nice splash screen was added to the application.
* A few bugs were fixed.
Get more info and demo version - http://axmasoft.com
Get free databases - http://sdict.com