Installing Firefox 56
22276
How do I downgrade Firefox v. 57 to v. 56?
13208
Can't log in using Firefox in Stack Overflow
4218
How to install Internet Explorer (multiple versions)?
16565
Flash plugin up to date but Firefox keeps telling me that I have the old version
126650
How do I install Google Chrome dev version?
134143
How do I know what packages I need to install?
64855
Website display issues in Firefox 57 Quantum
100385
Minimal installation details
7735
Can I use Chrome's Pepper Flash with Firefox?
101395
Help installing some Java and Flash
26041
Firefox thinks I'm using and older Flash version
114305
On really old Ubuntu 6.06 - How to upgrade
93766
Firefox 33 doesn't see Java Plugin
63294
Where can I ask questions regarding Firefox?
45553
How do I install the latest stable version of Firefox?
43157
How do I install the Tor Browser Bundle in Ubuntu?
57495
What is the 64-bit Firefox Beta PPA?