Which browser do you guys recommend?

Firefox

Firefox mainly but also Chrome for dev testing.

Vivaldi and QuteBrowser are the ones I use daily
Vivaldi as it is easily customizable and extensible, QuteBrowser for its keyboard-driven approach.

I used Firefox and it has a lot of plugin for development and work perfectly with selenium for testing

There are those who tell lies with meaning behind them and those meaning less lies!

I thought I'd drop some code here,  in case you might want to run 2 versions of Firefox. I'm on Ubuntu 16.04, and running the old version 48. Your results may vary.

Code:

#!/bin/bash

#
# After running this script, you need to do some things:
#  1) Go to Firefox prefs and turn off updating
#  2) Make your home page http://dev
#  3) Install Firebug
#  4) Install FirePHP
#  

FFDIR=$HOME/Firefox
FF48="https://ftp.mozilla.org/pub/firefox/releases/48.0/linux-x86_64/en-US/firefox-48.0.tar.bz2"
FFPROFILE=$HOME/.mozilla/firefox/firefox48
LAUNCHER=$HOME/.local/share/applications/ff48.desktop

# Make sure Firefox directory in home directory
if [ ! -d $FFDIR ];
then
    mkdir $FFDIR
fi

cd $FFDIR

# Remove the old Firefox directory if it exists
if [ -d $FFDIR/Firefox-48.0 ];
then
    rm -rf $FFDIR/Firefox-48.0
fi

# If Firefox 48 archive doesn't exist, get it from Mozilla
if [ ! -f $FFDIR/firefox-48.0.tar.bz2 ];
then
    wget $FF48 -O firefox-48.0.tar.bz2
fi

# Extract Firefox 48 from the tar.bz2 file if it exists
if [ -f $FFDIR/firefox-48.0.tar.bz2 ];
then
    tar -xjf $FFDIR/firefox-48.0.tar.bz2

    # Rename the extracted firefox directory to Firefox-48.0 if it exists
    if [ -d $FFDIR/firefox ];
    then
        mv $FFDIR/firefox $HOME/Firefox/Firefox-48.0

        # Remove the old profile directory for Firefox 48
        if [ -d $FFPROFILE ];
        then
            rm -rf $FFPROFILE
        fi

        # Create the profile to be used
        firefox -CreateProfile "firefox48 $FFPROFILE"

        # Make sure the launcher exists
        touch $LAUNCHER

        # Rebuild the launcher
        printf "[Desktop Entry]\n" > $LAUNCHER
        printf "Version=1.0\n" >> $LAUNCHER
        printf "Type=Application\n" >> $LAUNCHER
        printf "Terminal=false\n" >> $LAUNCHER
        printf "Name=Firefox48\n" >> $LAUNCHER
        printf "Comment=Run firefox 48.0\n" >> $LAUNCHER
        printf "Exec=$FFDIR/Firefox-48.0/firefox -no-remote -P firefox48\n" >> $LAUNCHER
        printf "Icon=/usr/share/icons/HighContrast/48x48/apps/firefox.png\n" >> $LAUNCHER
        printf "Categories=Utility;\n" >> $LAUNCHER

        # Finished
        $FFDIR/Firefox-48.0/firefox -no-remote -P firefox48
    else
        printf "Extracted archive directory did not exist\n"
    fi
else
    printf "Archive did not exist\n"
fi

Expert Website Development - Temecula, CA
Community Auth For CodeIgniter 3

Honestly, I did hear Firefox is best for developer tools. However, checking out the other browsers side by side it seems that Chrome is the most flexible and most customizable. It allows a vast range of different plugins and apps to be used, however it is the least secure in terms of spyware and malware. Edge is slower but more secure.

After having tried a few of them, I personally prefer firefox. A lot of you are right about how awesome it is for testing and developing

firefox as my default browser, but i have IE, Edge, FireFox, Chrome, Opera and WaterFox (64 bit fork of firefox) for website testing and development.

WaterFox (64 bit fork of firefox)

Firefox has an official 64-bit build, you know ...

I find the Chrome dev tools useless, personally I use Firefox dev edition for developing, and Firefox for normal browsing

Chrome for development Chromium for browsing

God Bless CI Contributors