Opt out of PRISM, the NSA’s global data surveillance program. Stop reporting your online activities to the American government with these free alternatives to proprietary software.

Operating system	Apple OS X Google Chrome OS Microsoft Windows	→	GNU/Linux Free, open source operating system. Debian Popular ethical GNU/Linux distribution. *BSD FreeBSD, OpenBSD, NetBSD, PC-BSD. Tails Live CD/USB designed for privacy.
Web browser	Apple Safari Google Chrome Microsoft Internet Explorer	→	GNUzilla IceCat GNU version of Firefox. add-torbutton Mozilla Firefox Open source web browser. add-torbutton mostly free* Tor Browser Bundle Encrypted, anonymous browsing. mostly free*
Web browser plugins		→	Fix Tracking! Guide to stop getting tracked online. Torbutton Tor plugin for IceCat and Firefox. advanced
Web search	Google Search Microsoft Bing Yahoo! Search	→	DuckDuckGo Anonymous, unlogged web searches. mostly proprietary* Startpage Private, unlogged web searches. proprietary* Seeks Project Open decentralized platform for collaborative search. Startpage Private, unlogged web searches. proprietary* YaCy Decentralized web search.
Online transactions	PayPal Google Wallet	→	Bitcoin P2P digital currency with no central authority.
Email services	Gmail Outlook Yahoo! Mail	→	Bitmessage Encrypted, decentralized email server. beta Riseup Secure and private email accounts. invite-only
Email desktop clients	Apple Mail Microsoft Outlook	→	Icedove Free version of Mozilla Thunderbird. Mozilla Thunderbird Open source email application. mostly free*
Email encryption		→	Enigmail An OpenPGP plugin for Thunderbird/Icedove. GNU Privacy Guard Free OpenPGP implementation. Mailvelope OpenPGP encryption for webmail. WebPG GnuPG/PGP in your browser.
Maps	Apple Maps Google Maps	→	OpenStreetMap Free, collaborative world wide map.
Cloud storage	Apple iCloud Dropbox Google Drive Microsoft SkyDrive	→	ownCloud Cloud data in your control. Sparkleshare Self-hosted version control and file sync. Tahoe-LAFS Free and open cloud storage system.
Social networking	Google+ Facebook LinkedIn Twitter	→	Diaspora* Community-run, distributed social network. Friendica Open source, free social web server. GNU Social Self-hosted, decentralized social network. Movim Private, decentralized social network server. xmpp/jabber pump.io Self-hosted social stream server. Tent Free, autonomous social network protocol.
Instant messaging	AOL Instant Messenger Google Talk OS X Messages Yahoo! Messenger	→	Cryptocat Private, encrypted online conversations. Off-the-Record Messaging (OTR) Install and enable in Pidgin for encrypted chat. Pidgin Open source chat program. xmpp/jabber otr Adium Pidgin for OS X (remember to enable OTR). xmpp/jabber RetroShare Free, secure, P2P communications platform.
Video conferencing/VOIP	FaceTime Google+ Hangouts Google Talk Skype	→	Jitsi Encrypted text and video chat. xmpp/jabber sip Mumble Encrypted, low-latency voice chat.
Media publishing	Flickr Instagram Picasa Tumblr YouTube	→	GNU MediaGoblin Decentralized media publishing platform. Piwigo Free photo gallery platform. Zenphoto Free media website CMS. WordPress Free website/blog CMS.
Document collaboration	Google Docs	→	Ethercalc Multi-user spreadsheet server. Etherpad Open source, real-time collaborative documents.
Web analytics	Google Analytics	→	Piwik Open source, self-hosted web analytics.
Android		→	CSIPSimple Free, encrypted VOIP for Android. CyanogenMod Aftermarket firmware for Android phones. mostly free* Gibberbot Private, secure OTR messaging for Android. Orbot Tor proxy for Android. RedPhone Secure private calls for Android. mostly free* Replicant Fully free Android distribution. TextSecure Secure SMS/MMS communication for Android. mostly free*
iOS	Apple iOS Messages Apple Mobile Safari WhatsApp Messenger	→	ChatSecure Encrypted IM for iOS. Onion Browser Secure browsing for iOS. $0.99
This website uses the Free Software Foundation’s* definition of free software. “Free software” means software that respects users’ freedom and community. Roughly, the users have the freedom to run, copy, distribute, study, change and improve the software. With these freedoms, the users (both individually and collectively) control the program and what it does for them. (more …) —The Free Software Foundation
Mentioned by the media. Dutch Pruyn, Rowald. “Website wijst hoe je van spionage PRISM afkomt.” ZDNet. 11 June 2013. English /r/technology “How to opt out of PRISM, the NSA’s global data surveillance program.” Reddit. 10 June 2013. Keiser, Max. “Site of the day: prism-break.org.” Max Keiser Financial War Reports. 11 June 2013. Neagle, Colin. “How to opt out of PRISM, the NSA’s spying program.” Network World 10 June 2013. Walton, Zach. “ Don’t Trust Tech Companies With Your Data? Use These Alternatives .” WebProNews 10 June 2013. French Big Browser. “PRISM — Comment passer entre les mailles de la surveillance d’Internet ?” Le Monde. 11 June 2013. L., Julien. “PRISM : des logiciels et services alternatifs pour limiter la surveillance.” Numerama. 11 June 2013. Pelletier, Nicolas. “Surveillance : comment contourner le programme Prism.” Rue89. 11 June 2013. German Fennen, Nicolas. “PRISM-Break: Mit dieser Software der NSA-Spionage entgehen.” Netzpolitik.org. 11 June 2013. Polish fabek. “Nie daj się szpiegować – PRISM BREAK.” Wykop.pl. 11 June 2013.