MultiBoot USB
This is a project that contains a collection of GRUB files and scripts that will allow you to create a pendrive capable of booting different ISO files.
The OpenBSD project produces a free, multi-platform BSD 4.4-based UNIX-like operating system. Its efforts emphasize portability, standardisation, correctness, proactive security and integrated cryptography. The project also develops the widely-used and popular OpenSSH (OpenBSD Secure Shell) software, which provides encrypted communication sessions over a computer network using the SSH protocol.