libvirt vs Otto: What are the differences?
What is libvirt? An open-source virtualization API. It is an open-source API, daemon and management tool for managing platform virtualization. It can be used to manage KVM, Xen, VMware ESXi, QEMU and other virtualization technologies.
What is Otto? Development and Deployment Made Easy. The successor to Vagrant. Otto automatically builds development environments without any configuration; it can detect your project type and has built-in knowledge of industry-standard tools to setup a development environment that is ready to go. When you're ready to deploy, otto builds and manages an infrastructure, sets up servers, builds, and deploys the application.
libvirt and Otto belong to "Virtual Machine Management" category of the tech stack.
Otto is an open source tool with 4.4K GitHub stars and 252 GitHub forks. Here's a link to Otto's open source repository on GitHub.