Guake - I love being able to keep my terminal out of the way and just grab it with a key
Vim + Pathogen
AirVPN
Irssi - Irssi + Guake = awesome
KeePass - Gotta protect some passwords!
Despite its noble intentions and obvious need, Replicant is good as dead. There isn't enough hardware support or dev activity to keep it alive.
Now I don't know about Trisquel for mobiles. But have you heard of Sailfish? That might be your answer.
Are you familiar with running applications through the command line?
This seems to be a decent guide to figure out where the applications might be: https://www.linode.com/docs/tools-reference/tools/find-files-in-linux-using-the-command-line/
Yeah, it works if you have a webbrowser that doesn't force HTTPS (i.e. doesn't have dom.security.https_only_mode
set or HTTPS Everywhere with "force HTTPS" on)