13. KeePassX
KeePassX is a password manager which
lets you access all your passwords by
entering a master password. All your
passwords are kept in encrypted form. It’s
better to have them in one place and
compromised than forgetting them all the
time or writing them down to napkins...
http://www.keepassx.org/
18. HTTPS Everywhere!
HTTPS Everywhere! is a browser addon (for
Chrome, Firefox and Opera) which tries to
run the websites always through the
secure HTTPS protocal (instead of the
insecure HTTP)
https://www.eff.org/https-everywhere
19. NoScript
NoScript is a browser addon which
prevents any website to run freely scripts
on your computer unless you explicitly
allow it to do so.
Highly recommended!
https://noscript.net/