Tomb is a system to make strong encryption easy for everyday use. A tomb is like a locked folder that can be safely transported and hidden in a filesystem. Its keys can be kept separate; for example, you can keep the tomb on your computer and its key on a USB stick. Tomb is written in code that is easy to review and links shared components: it consists of a ZShell script and desktop integration apps; it uses standard GNU tools and the cryptographic API of the Linux kernel (dm-crypt) via cryptsetup.
Chrubix installs the GNU/LInux distro of your choice - ArchLinux, Debian, Fedora, Kali, SuSE, or Ubuntu - onto a removable MultiMediaCard (MMC) on your ARM-based Chromebook. Chrubix supplies Guest Mode, full-disk encryption, Windows XP camouflage mode, MAC address randomizing, a panic button, additional checksums, and a variety of important security-oriented software applications such as Freenet, I2P, Tor, GPG, and LEAP-Bitmask. In addition, Chrubix offers you the option to tweak the software so that it will run on no hardware but yours (MMC and laptop must match). In this way, it transforms your ARM-based Chromebook into a fully functional, more secure laptop.