1) Pandas for data analysis and manipulation 2) BitTorrent (P2P file distribution technology). It is the best and fastest way to distribute files, however, it's main problem is piracy 3) Self updating software (Google chome was an early example) 4) AJAX - The web wouldn't have been what it is today without it 5) VIM 6) Package management software - Brew / apt-get / yum 7) software package management - pip / npm / maven