+Contact: Edward Tomasz Napierala <trasz@freebsd.org>
+
+There is now a wiki page to track source compatibility differences between FreeBSD and Linux -- and it needs your input!
+
+FreeBSD and Linux are already largely compatible at the source code level due to both being Unix systems and following the same standards.
+There are however certain system calls specific to Linux; there are also differences in header files, constants and so on.
+Implementing them in FreeBSD would make porting software easier.
+
+Not all of the items there are fixable.
+Some differences cannot be eliminated due to naming clashes, disagreements on how the system is supposed to work, or because it would make autoconf pick up a less functional compatibility API instead of the native one.
+In such cases we should document it and advise what API to use instead.
+
+The wiki page aims to provide an overview and help track progress.
+That is where your help is needed.
+I need people who actually port software to FreeBSD to add missing APIs, based on their experiences.
+This also includes non-syscall items, like missing headers and unsupported constants.
+Preferably also mention the name of the software that could use them.