libguestfs vs StarWind RAM Disk

libguestfs is a free library and toolset for working with virtual machine disk images. It can inspect and edit guest files, script changes, create or resize images, make backups, clone virtual machines and build them. The project says it can access almost any disk image, including those from VMware and Hyper-V, and images created by VMware, KVM, qemu, VirtualBox, Xen and other hypervisors; libvirt is not required. Its command-line tools include guestfish, a scriptable shell, and virt-rescue, an interactive rescue shell. The C library has bindings for many languages, with examples for C/C++, Erlang, Go, Java, Lua, OCaml, Perl, Python and Ruby. Guest filesystems are accessed through a Linux kernel in a qemu virtual machine, usually as a non-root user; sVirt with libvirt and SELinux can also be used. It runs on many Linux distributions and Mac OS X, while some virt tools have been ported to Windows. Non-Linux systems may require compiling from source and porting.

StarWind RAM Disk is a free Windows utility that uses available system RAM as a virtual storage device. It is aimed at testing and development, troubleshooting, and specialized uses such as online payment services or on-the-fly encryption where volatile data is acceptable. The product page says users can create a disk in a few clicks without additional hardware and choose its size from available RAM. Persistent mounts are supported, while virtual disk files are not. StarWind lists the utility as free without hidden payments, required extra licenses, or time limits; its plan is free. A download link appears on the product page, and the maker’s download page lists the utility among Windows software. StarWind’s support navigation includes a forum and knowledge base. The company was founded in 2003 and is headquartered in Beverly, Massachusetts, USA. No named integrations are listed.