Alternative to Gala taskswitcher using Rofi

I kinda hate the default Alt+Tab switcher in Pantheon, so I use Rofi to fix that. This is how to use rofi as Alt+Tab switcher. Make sure you have rofi version 1.6.1 installed for this to work propperly.

Create a new scriptfile called alttab.sh with this content:

#!/usr/bin/env bash
xdotool mousemove 960 540 && rofi -no-config -theme alttab -kb-cancel "Alt+Escape,Escape" -kb-accept-entry '!Alt-Tab,!Alt+Down,!Alt+ISO_Left_Tab,!Alt+Up,Return,!Alt+Alt_L' -kb-row-down 'Alt-Tab,Alt+Down,Down,ISO_Left_Tab' -kb-row-up 'Alt+ISO_Left_Tab,Alt+Up,Up' -show window -selected-row 1 
exit

Now make it executable:

sudo chmod +x ./alttab.sh

Delete default Alt+Tab shortcut in Switchboard -> Keyboard -> Shortcuts -> Windows
Now link to the file you created earlier and assign it to Alt+Tab.

This looks the best using this custom rofi theme I made: https://github.com/RobinBoers/dotfiles/blob/master/.config/rofi/alttab.rasi

Assign Rofi to super key in Pantheon

I'm used to use the super key to search, because I used Windows for a long time, so I like to assign Rofi to the super key.

gsettings set org.gnome.mutter overlay-key "'Super_L'"
gsettings set org.pantheon.desktop.gala.behavior overlay-action "rofi -show drun"

You can use any launcher. In this example I'm using Albert:

gsettings set org.gnome.mutter overlay-key "'Super_L'"
gsettings set org.pantheon.desktop.gala.behavior overlay-action "albert"

Enable tray indicators in Pantheon

Some apps use the old system tray. To view them in the elementaryOS tray edit /etc/xdg/autostart/indicator-application.desktop and change this line:

OnlyShowIn=Unity;GNOME;

to

OnlyShowIn=Unity;GNOME;Pantheon;

Now install the old panel indicator from launchpad.net:
http://ppa.launchpad.net/elementary-os/stable/ubuntu/pool/main/w/wingpanel-indicator-ayatana

After relog you should be able to see the icons in wingpanel.