GoldenDict - The program has the following features: Use of WebKit for an accurate articles' representation, complete with all formatting, colors, images and links.
Dictionary Universal - An application for viewing StarDict dictionaries and dictionaries in Lingvo DSL format.
Dicty - Dicty is a viewer application for dictionaries in StarDict format.
Longman English Dictionary Online - The Longman Dictionary of Contemporary English Online is an online version of the CD-ROM of the...
MDict - MDict is a multi-platform open dictionary.
ColorDict - colordict has one repository available. Follow their code on GitHub.