There are a lot of tools and major projects within the various BSD's that are GPL'ed software. This includes but certainly isn't limited to gcc, gdb, grep, binu

There are a lot of tools and major projects within the various BSD's that are GPL'ed software. This includes but certainly isn't limited to gcc, gdb, grep, binutils, diff, and more. It is only recently in the last few years that the BSD projects have started removing GPL'ed software from their base trees and replacing them with BSD equivalents. clang is slowly being accepted by FreeBSD (a BSD compiler developed by Apple), tools like grep and diff are being redone under the BSD license, and OpenBSD is looking at pcc to replace the gcc compiler for their base system. The main reason is simply because they want to create a fully BSD distribution of components, where none of it is under the GPL license, secondary only recently has there been a new compiler available that is as good as gcc and could be a viable replacement.