Rofi

Rofi started as a clone of simpleswitcher, written by Sean Pringle - a popup window switcher roughly based on superswitcher. Simpleswitcher laid the foundations, and therefore Sean Pringle deserves most of the credit for this tool. Rofi (renamed, as it lost the simple property) has been extended with extra features, like an application launcher and ssh-launcher, and can act as a drop-in dmenu replacement, making it a very versatile tool.
— davatorium/rofi

Rofi is my primary UI for GUI windows manage (launch/activate), passwords picking with pass, open bookmarks, favorite files open tool, etc.

Key bindings (not all)

• Paste clipboard::C-v
• Clear line:C-w
• Move to end of line::C-e
• Move to start of line::C-a
• Move word forward::M-f
• Move word backward::M-b
• Move character forward::C-f
• Move character backward::C-b
• Remove word backward::C-BCK
• Remove word forward::C-A-d
• Remove char forward::C-d or DEL
• Remove char backward::C-h or BCK
• Remove to EOL* (not working FSR)::C-k
• Delete till start of line::C-u
• Accept selection::C-m or RET
• Use entered text as command (useful to run commands with args)::C-RET
• Use entered text as command (in ssh/run modes)::C-S-RET
• Use alternate accept command (?)::S-RET
• Delete entry from history::S-DEL
• Switch to next mode::S-Left or C-TAB
• Switch to previous mode::S-Right
• Start completion for mode::C-l
• To the previous column::C-Page_Up
• Go to the next column::C-Page_Down
• Select previous entry::Up or C-p
• Select next entry::Down or C-n
• Go to next row::Tab
• Go to previous row::S-Tab
• Go to the previous page::Page_Up
• Go to the next page::Page_Down
• To the first entry::Home
• Go to the last entry::End
• Set selected item as input text::C-space