It is easier than you think to change your operating system. With Windows 7 no longer being supported as of January 2020 & older PC's being unable to run Windows 10, the cost of upgrading your PC/Laptop/Operating System can become quite expensive, so; it makes perfect sense to switch to Linux. Linux is free & secure O/S with many choices of distributions. Get started with Pendrivelinux to create a bootable USB with your favourite Linux distro.
Manjaro is an open-source Linux distribution based on the Arch Linux operating system. Manjaro has a focus on user friendliness and accessibility, with its variety of pre-installed software. It features a rolling release update model and uses pacman as its package manager.
Android x86 ISO
This is a project to port Android open source project to x86 platform, formerly known as "patch hosting for android x86 support". The original plan is to host different patches for android x86 support from open source community.
Unraid is an operating system for personal and small business use that brings enterprise-class features letting you configure your computer systems to maximize performance and capacity using any combination of applications, VMs, storage devices, and hardware.
FreeNAS is a free and open-source network-attached storage software based on FreeBSD and the OpenZFS file system. It is licensed under the terms of the BSD License and runs on commodity x86-64 hardware. FreeNAS supports Windows, macOS and Unix clients and various virtualization.