# LXD > This is the documentation for LXD, a system container and virtual machine manager. 2014-2026 AGPL-3.0, LXD contributors ## Pages in this subsection - [Idmaps for user namespace](https://canonical.com/lxd/docs/default/userns-idmap/index.html.md): LXD runs safe containers. This is achieved mostly through the use of ## Optional - [Top-level llms.txt](https://canonical.com/lxd/docs/default/llms.txt): Complete documentation index.