[gnome-boxes.wiki] Create tools

[Felipe Borges <felipeborges src gnome org>]

commit 795360714800458b6d78c487a20a36ec27100dbe
Author: Felipe Borges <felipeborges gnome org>
Date:   Fri Jun 25 09:59:23 2021 +0000

    Create tools

 tools.md | 5 +++++
 1 file changed, 5 insertions(+)
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diff --git a/tools.md b/tools.md
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+GNOME Boxes is powered by various free and open source software libraries such as:
+
+- libosinfo: provides tools to inspect operating system bootable images and match these to a database of 
recommended configurations for the respective operating system.
+- libvirt: manages the creation/deletion/cloning of virtual machines as well as the assignment of virtual 
devices to it.
+- qemu: is the emulator/virtualizer.
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