Ground News Bias Checker - Browser extension which exposes media bias as you browse.
Metafact - Verify facts with the world's scientists
Brainiac - Database of 150 cognitive biases that control our decisions
Cognitive Lode - Playbook of cognitive biases & psych research
Fake News: The Game - A game of facts & falsehoods
Fact Check by Google - Google fights fake news in search with 'fact check'