Pixelogic - Daily Picross - Nonogram logic game with 5000+ puzzles and a daily puzzle
LogicLike - Improve logical thinking through engaging brain games
Techloop.io - Changing the way developers find jobs
Zuli Smartplug - Your invisible interface to the smart home
Brain Games - Boost memory power with free brain games
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.