1. Daemon based on liblxc offering a REST API to manage containers

  2. ZeroVM is an open source virtualization technology that is based on the Chromium Native Client project.

  3. An industry-standard container runtime with an emphasis on simplicity, robustness and portability

  4. Docker is an open platform that enables developers and system administrators to create distributed applications.

  5. LXC by Linuxcontainers.org is a set of tools, templates, library and language bindings. It's pretty low level, very flexible and covers just about every containment feature supported by the upstream kernel.

  6. App Container runtime