Website: https://twitter.com/
Free iPad app: https://itunes.apple.com/us/app/id333903271?mt=8&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/id333903271?mt=8&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.twitter.android
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.twitter.android
Free Mac program: https://itunes.apple.com/us/app/twitter/id409789998?mt=12&uo=4&at=10l6SU
Google Chrome app: https://chrome.google.com/webstore/detail/diigo-bookmark-archive-hi/oojbgadfejifecebmdnhhkbhdjaphole
Mozilla Firefox extension: https://addons.mozilla.org/en-US/firefox/addon/diigo-web-highlighter-and-stic/
Free iPad app: https://itunes.apple.com/us/app/diigo/id417202559?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/diigo-offline-reader/id335006600?mt=8&uo=4&at=10l6SU
Website: http://www.diigo.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.facebook.katana
Google Chrome app: https://chrome.google.com/webstore/detail/facebook-notifications/nmameahlembdcigphohgiodcgjomcgeo
Mozilla Firefox extension: https://addons.mozilla.org/en-US/firefox/addon/facebook-toolbar/
Free iPad app: https://itunes.apple.com/us/app/facebook/id284882215?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/facebook/id284882215?mt=8&uo=4&at=10l6SU
Website: http://www.facebook.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.google.android.apps.plus
Google Chrome app: https://chrome.google.com/webstore/detail/google%20/dlppkpafhbajpcmmoheippocdidnckmm
Free iPad app: https://itunes.apple.com/us/app/google+/id447119634?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/google+/id447119634?mt=8&uo=4&at=10l6SU
Website: http://plus.google.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.tumblr
Free iPhone app: https://itunes.apple.com/us/app/tumblr/id305343404?mt=8&uo=4&at=10l6SU
Website: http://www.tumblr.com/
Website: http://www.youtube.com/
Free iPad app: https://itunes.apple.com/us/app/youtube/id544007664?mt=8&uo=6&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/youtube/id544007664?mt=8&uo=6&at=10l6SU
Free Android Phone app: https://play.google.com/store/apps/details?id=com.google.android.youtube
Free Android Tablet app: https://play.google.com/store/apps/details?id=com.google.android.youtube
Google Chrome app: https://chrome.google.com/webstore/detail/youtube/blpcfgokakmgnkcojhhkbfbldkacnbeo
Free Android Phone app: https://play.google.com/store/apps/details?id=com.google.android.apps.docs
Google Chrome app: https://chrome.google.com/webstore/detail/google-drive/apdfllckaahabafndbhieahigkjlhalf
Free iPad app: https://itunes.apple.com/us/app/google-drive/id507874739?mt=8&uo=4&at=10l6SU
Free iPhone app: https://itunes.apple.com/us/app/google-drive/id507874739?mt=8&uo=4&at=10l6SU
Website: http://docs.google.com/
Free Android Phone app: https://play.google.com/store/apps/details?id=com.evernote
Google Chrome app: https://chrome.google.com/webstore/detail/pioclpoplcdbaefihamjohnefbikjilc
Mozilla Firefox extension: https://addons.mozilla.org/en-US/firefox/addon/evernote-web-clipper/
Free iPad app: http://itunes.apple.com/us/app/evernote/id281796108?mt=8&uo=4&at=10l6SU
Free iPhone app: http://itunes.apple.com/us/app/evernote/id281796108?mt=8&uo=4&at=10l6SU
Free Mac program: http://itunes.apple.com/us/app/evernote/id406056744?mt=12&uo=4&at=10l6SU
Apple Safari extension: http://evernote.com/download/get.php?file=SafariExtension
Free Windows program: http://evernote.com/download/get.php?file=Win
Website: http://www.evernote.com/