Mac: ReadKit (used to use Reeder, prefer ReadKit anyhow), Evernote, TextWrangler, Caffeine, Moom, XtraFinder, Steermouse, VLC, The Unarchiver, VirtualBox, Handbrake, Max, Tag, Dropbox, plus the majority of the commonly used Apple apps (Safari, Messages, Mail, Pages, Notes).
XtraFinder, Moom, Steermouse, VLC and ReadKit are particularly recommended (the best available for what they do IMO).
iOS: Reeder, Evernote, Dropbox, Safari, Mail, Messages, Google Hangouts, Hullomail, plus a bunch of games and few other small apps.