West-chamber-scholar-zhang is a project mainly written in C and SHELL, based on the GPL-2.0 license.
GFW tools
Xtables-addons is the proclaimed successor to patch-o-matic(-ng). It contains extensions that were not accepted in the main Xtables package.
Xtables-addons is different from patch-o-matic in that you do not have to patch or recompile either kernel or Xtables(iptables). But please see the INSTALL file for the minimum requirements of this package.
All code imported from patch-o-matic has been reviewed and all apparent bugs like binary stability across multiarches, missing sanity checks and incorrect endianess handling have been fixed, simplified, and sped up.