Memento Mori - A little stoic reminder page
UnDistracted App - Use social media in a useful way. Control Facebook, YouTube, Twitter, Reddit, Netflix and LinkedIn in a responsible way.
CUBI - See your life in weeks
Startup Graveyard - History shouldn't have to repeat itself
Newsfeed Burner - Burn away distractions on Facebook, Linkedin and Youtube
Google Graveyard by SaaSHub - The Google Graveyard is the complete list of discontinued products by Google. Also known as 'The Google Cemetery'