Visopsys (VISual OPerating SYStem) is an open source, small and fast alternative operating system targeted at PC-compatible computers. It is written from scratch and it’s continually in development, since 1997. Its main goal is to gather some of the best ideas from other operating systems.
The operating system is distributed as an ISO image that can be deployed to either a USB flash drive or CD disc, an IMG file that must be written on a floppy disk, as well as a source archive for those who want to hack the system and add additional features or just want to see how it all works.
There are no boot options on the ISO or IMG files, as the system loads directly and will start to detect various hardware components, such as PS/2 mouse devices, real-time clock (RTC), IDE disk controller, PCI bus controller, etc.
Old-style desktop environment à la Mac OS 9
The desktop environment of the Visopsys operating system looks like the graphical interface of Mac OS 9. It features a top panel for accessing various system settings, such as logout, and and old-style look and feel.
It includes a command window, user manager, program manager, keyboard mapping, image viewer, disk manager, screenshot utility, display manager, console window, configuration editor, as well as an installer, which means that you can permanently install the operating system on a local drive.
Summing up, the Visopsys operating system features real preemptive multitasking, virtual memory, 100% protected mode, massively-monolithic-style kernel, as well as a simple and easy-to-use user interface. Please keep in mind that Visopsys is not a clone of any other operating system and it is not a distribution of Linux.