Software you should be totally be using.

Things for personal communications and file keeping.

• Profanity: An Jabber client that impletments the unbreakable OTR encryption.
• Tomb: the crypto undertaker.
• Tor Browser: the web browser that protects you from global surveilance and routes around censorship.
• Twister: a decentalized, encrypted, and censorship resistant FOSS replacement for Twitter.
• GPG: the electronic envelope for your electronic mail.
• Osmo: the best little personal information manager, plus encryption!
• Tox: a FOSS replacement for Skype, NOT DONE YET, STILL BEING WORKED ON.

Things for helping yourself and having fun.

• Minetest: what minecraft could have been.
• Scorched 3D: be a tank, do tank things.
• Redshift: warm milk for your eyes.
• Teeworlds: okay, imagine multiplayer PvP Kirby, but with guns.
• Backchannel: with this little Ruby program, when the internet goes out, you can still talk to people on the same local network as you. EG: Chat on your wifi router.
• Draft: a small, quick, and clean document writer written in Vala-GTK.
• Screen-Message: turn your monitor into a signpost.
• GNOME Panel applet implementing a timer for the Pomodoro Technique(tm).

Things for making the world a better place.

• Openbazaar: a self-hosted and decentralized Amazon.com for the Earthlings of the 21st century.
• Bitcoin: a trustless and decentralized currency to be used just like any other, but no one to tell you how or if you can use it. Your money belongs to you.
• Byzantium Linux: a Linux distro that sets up an ad-hoc wifi meshnet in under sixty seconds. Just remember to keep a bootable thumbdrive with this on it for any SHTF situation.
• i2p: the undergound railroad of the internet.
• Gilga: an ad-hoc, distributed and encrypted chat application that runs over Blutooth. Great for conventions, festivals, or if you happen to be protesting your corrupt government and notice all the cell towers have mysteriously shut off...