Harmful service/software    Good alternative

Windows,OSX   www.trisquel.info

Facebook       www.diasp.org

Twitter            http://www.identi.ca

Google Search      www.duckduckgo.com
                            https://startpage.com/

Gtalk (account)      www.dukgo.com
Gtalk (software)     www.pidgin.im

Safari,Internet Explorer http://www.mozilla.org/en-US/firefox/new/
                          https://www.torproject.org/index.html.en

Paypal,Google Wallet        http://bitcoin.org/

E-Mail service     https://bitmessage.org/
                   https://riseup.net/en

E-Mail client      https://www.mozilla.org/en-US/thunderbird/

E-Mail encryption  http://www.enigmail.org/
                   http://www.mailvelope.com/
                   http://webpg.org/

DropBox,Google Drive http://owncloud.org/
                      


Gtalk, Yahoo MSN   http://www.pidgin.im/ + http://www.cypherpunks.ca/otr/ + 
account from https://dukgo.com/blog/using-pidgin-with-xmpp-jabber

Skype, Gtalk(video chat) https://jitsi.org/

Youtube, Flickr http://mediagoblin.org/

Google Docs (Spreadsheets) http://ethercalc.org/
Google Docs (Text processing) http://etherpad.org/

Android http://www.cyanogenmod.org/ https://whispersystems.org/#encrypted_voice https://whispersystems.org/#encrypted_texts