WWDC app for OS X - An app to view and watch WWDC sessions on your Mac
Localizer - Free self-hosted open-source crowd-translating service
WWDC Together - Watch and discuss WWDC together
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Make OS X Great Again - Fix the things that make 🍎 OS X annoying
Lingvanex - Translation apps for business, travels, professional translators, students and free style people.