Why are there no keyboard extensions to add useful features?

My A4tech kb had 18 configurable buttons allowing me to use one to compose and then pop up my entire letterhead, others to hold long passwords and foreign marks, the English pound sign, etc. Miss it greatly.

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by xstokes
50 minutes ago
Last post by king.myrtice
2 hours ago
screen black
Started by hollie81
Last post by white.justine
2 hours ago
Last post by beahan.brycen
2 hours ago
Last post by lelah.rice
3 hours ago
Last post by ward.gino
4 hours ago
Last post by rosamond.boyle
1 hour ago