st is a simple terminal implementation for X from suckless.org
xst is a st fork that adds Xresources support and some pretty good patches.

xst contains the following suckless patches already applied to the source code:
-alpha
-boxdraw
-clipboard
-disable bold/italic fonts
-externalpipe
-scrollback
-spoiler
-vertcenter

Note that the hidecursor patch is not supported.