FOSDEM is the biggest free and non-commercial event organized by and for the community. It is held each year in Brussels, Belgium in February. Here are the links to the BSD presentations:
David Chisnall: Implementing Domain-Specific Languages with LLVM
Arun Thomas: MINIX 3 and BSD
Baptiste Daroussin: Introduction to pkgng
David Chisnall: Towards a BSD C++11 Stack
Brooks Davis: Integrating LLVM into FreeBSD
Marc Balmer: The Lua Scripting Language in the NetBSD Kernel
Pierre Pronchery: Touch your NetBSD
Benny Siegert: pkgsrc on MirBSD
Guillaume Lasmayous & Emile Heitor: Introduction to pkgsrc, and to Package Creation in NetBSD
Emile Heitor: pkgin, a Binary Package Manager for pkgsrc
Nicolas Thauvin: Automated Package Building
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