AsmLibx is a text window library for X windows. It talks directly to x server and does not use xlib. It is written in assembler for x86 processors and uses a simple interface. The goal of AsmLibx is to be fast, small, and easy to use.
TraceX shows x server protocall communication for a selected program. This is the low level comminication used by xlib and others. The data can be shown as raw hex io, or formatted into the individual functions. This program meets the SFF guidelines.