LXD vs Vagrant Cloud: What are the differences?
What is LXD? Daemon based on liblxc offering a REST API to manage containers. LXD isn't a rewrite of LXC, in fact it's building on top of LXC to provide a new, better user experience. Under the hood, LXD uses LXC through liblxc and its Go binding to create and manage the containers. It's basically an alternative to LXC's tools and distribution template system with the added features that come from being controllable over the network.
What is Vagrant Cloud? Share, discover, and create Vagrant environments. Vagrant Cloud pairs with Vagrant to enable access, insight and collaboration across teams, as well as to bring exposure to community contributions and development environments.
LXD and Vagrant Cloud can be primarily classified as "Virtual Machine Platforms & Containers" tools.
LXD is an open source tool with 2.25K GitHub stars and 526 GitHub forks. Here's a link to LXD's open source repository on GitHub.