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Firejail
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Firejail is a Linux-only sandbox that uses Linux namespaces, seccomp-bpf and all the latest Linux security features to create a new, fully secure filesystem. It allows a process and all its descendants to have their own private view of the globally shared kernel resources, such as the network stack, process table, mount table. It comes with a myriad of profiles by default, which are then used on a per-software basis.
Installation
Installation varies among different GNU/Linux distributions, and it might be as easy as installing it as a package from an official repo. Check your distros repos first.
Debian
Debian's Firejail installation process requires you to add a backports repository if you're using stable (jessie). Simply add the backports line to your sources.list in /etc/apt, update your repositories and install firejail using the -t jessie-backports option.
$ sudo apt-get -t jessie-backports install firejail
